Before using your spray gun for painting, you will want to clean the gun to ensure that any paint residue from last time is removed. You don’t want anything in the gun that could mix with the paint and ruin the task you are about to complete! Allow the gun to dry completely before you fill it with your mix. Fill it with the mix just before you begin painting to avoid it settling in the canister. You will want to have prepared the room or area you are painting beforehand. Be sure to cover the floor and mask areas you don’t want to get paint on with plastic and tape. You can remove this easily from your doors, windows, and other frames then once you are done. Before spraying the paint, take some time to familiarize yourself with the nozzles and practice adjusting them. If you don’t have an adjustable nozzle, then be sure you can reach all the areas that you intend to paint. Here, you can also adjust the flow pattern if you wish to ensure that it is appropriate for your task. You can find out how to do this in your user manual. Spray guns don’t require too much prep before you use them, all you need to do is know how it works and put the paint in! We do suggest that you check your instructions carefully beforehand to make sure that the manufacturer doesn’t suggest any extra preparation steps. If they do, be sure to follow them for best results!