In one sentence, describe what the following article is about: Get a heavy, smooth illustrator paper (such as Bristol), a sturdy piece of acetate, or non-fusible heavy weight interfacing (such as Pellon Peltex). Cut the material so that the sized image will fit on it. Leave 2"-3" (5-7.5 cm) beyond the image as a border. This prevents overspray from getting onto the item being airbrushed. Acetate or interfacing is sturdier than paper or cardboard. If the stencil is to be reused, choose the longer lasting material. With paper or cardboard, you can draw the image directly on the stencil material. Lay image on the chosen stencil material. With masking tape secure the image. There is no need to tape along the entire edge. Just ensure that the image won't slide around on the stencil material. Place taped image on stencil material onto a cutting mat. With a utility knife carefully cut image outline. Cut out any detail highlights wanted on the stencil. The utility knife is useful for making stencil details. For example, to cut out circles, swirls, or defining lines within the image, use different blades to get the desired effect. Peel away and discard tape from edges of the taped down image. Lift off image to reveal the stencil. Pick up paper, acetate, or thick fabric stencil and gently push on it to pop out the cut image. You now have positive and negative stencils. The negative stencil is the material surrounding the image cut out while the positive stencil is the solid image cut out. You can easily use either of these popular types of stencils. For a stencil with thick paper board or cardboard, simply tape the stencil to the surface to be airbrushed. Use basic masking tape. If airbrushing fabric, smooth fabric completely and lay it flat on the ground. Do tape the stencil down so it doesn't move while airbrushing. If using acetate, thin paper or non-fusible heavy weight interfacing (Pellon Peltex), turn stencil over and spray it lightly with stencil adhesive spray. Let adhesive rest for a few minutes. Stencil adhesive spray is available at craft supply or hardware stores. If you don't let the adhesive rest, a residue will remain on the airbrushed item. Place stencil on item to airbrush and tape down edges. Load airbrush and spray over surface of the stencil. Slowly lift away stencil and let image dry. Protect fabric from airbrush over spray by blocking off the rest of the fabric with taped down plastic sheeting on item. Remember to wear a respirator when using the airbrush.
Summary: Cut your stencil material to size. Tape image to the stencil material. Use a utility knife to cut out image on stencil material. Remove tape and image from the stencil. Secure stencil to the object to be airbrushed. Spray back of stencil with adhesive, if necessary. Use your airbrush with your stencils.

When sending a customer an invoice, it's important you include key pieces of information, rather than just scribbling the amount owed on a piece of paper. Use the word "invoice." Don't assume the customer will know the invoice is an invoice if you don't use that word. Give the invoice a number. You will want to keep track of the invoice. To do this more easily, you should include a unique identification number on the invoice. Some businesses will customarily add a tax identification number (known as a TIN) on invoices. Check with an accountant about whether you have one or need to do so. For example, non profit organizations and child-care agencies are some organizations that will customarily include tax identification numbers on invoices. Numbering the invoices you send out should enable you to keep better track of them, especially since you should retain a copy of each invoice. This way, the invoices should be in order by number based on the date they are sent. You can either buy invoices that are already numbered, use software that creates them for you, or create your own and number them. Include the purchasing number the invoice corresponds to if there is one. This will help you employ better accounting methods at your company. Customize the invoice by asking on the front end if customers need any special information, such as an employer identification number or a purchase order. Ask who the invoice should be directed to if you are dealing with a customer. If you want to get paid in a timely fashion, you should date the invoice but also note the terms of payment that you expect the customer to follow. These terms should be spelled out at the time of purchase, as well. For example, the invoice should bear the date that the invoice itself was issued, as well as the date of purchase of the goods or services. When listing the terms of payment, make it clear to the consumer how soon the customer is expected to pay. For example, perhaps the payment is due within 30 days. Some companies choose to offer discounts. If you do, also spell them out clearly on the invoice. For example, you might offer a 1 percent discount if the customer pays the invoice within 30 days. Small businesses should retain records of all invoices sent for at least six years. This is important for tax purposes and just good business accounting. An accountant can help you figure out the rules and regulations on record-keeping. It's possible to keep electronic records. However, if you do so, retain a back-up copy. Post cash receipts promptly so you can track with accounts remain outstanding, which customers have sent in some money, and which are not sending any at all. Invoiced payments are essentially you extending credit to a customer and the law considers this an unsecured loan, meaning it was not secured by collateral, making it harder to recover the money from a customer if they don't have the money to pay. In the beginning, there can be less margin of error for a small business when it comes to revenue, so every payment can matter. Try to keep invoicing to a minimum when starting out and get payment up front in cash whenever possible. For many small businesses, it's not uncommon for a third of your receivables to be delinquent. Consider whether it's worth offering services for an upfront flat rate rather than a more costly hourly rate since you might not recoup what you're owed with the latter. Such services, although they cost money, can help you track and organize your invoices, and make them look more professional. Some services allow you to create and send invoices by email, for example. You are able to view which invoices have been paid and send out reminders to those who are not. There are also apps that will send out invoices by phone. Some of the services include a complete history of the customer's account. This can help you keep track of customers, as well as payments. Some of the services allow you to add your company logo to the invoice and simply require you to fill in online boxes to update the amount. There are many of these services offered through the Internet.
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One-sentence summary -- Make it look professional. Number the invoice. Date the invoice. Retain a copy of all invoices. Keep invoices to a minimum. Use an electronic invoice service.

Problem: Article: Keep your thermostat at a consistent and comfortable temperature. A conventional heating system usually requires you to turn the thermostat down while you sleep or while you're away from your home. By increasing the temperature drastically, you force your heat pump to work harder. It could also make a secondary heating system run and burn more energy. The heat pump will not heat the area faster if you turn up the thermostat. Your heat pump will not have enough power to keep your home at a comfortable temperature. The setting will either say "auxiliary" or "emergency" heat. Your energy efficiency will decrease the more you run an auxiliary unit.
Summary:
Set your heat pump to "heat" at 68F (20C) for the highest efficiency. Avoid increasing the thermostat more than 2 degrees at a time. Turn on a backup heat unit if outside temperatures are below 35F (2C).