There are several ways to add lettering if you don't have stencils. You can print off your favorite font in a size that fits your canvas, cut each letter out and transfer it onto your canvas. Or you can use the chalk transfer method if you don't want to cut out each letter individually. Just rub chalk on the back side of the word you are transferring, place it chalk side down onto the canvas where you are planning on putting the word and trace around each letter with a pencil. (To see more details on how to transfer a word with chalk, check out this DIY wooden home sign post.) The final method is with a Cricut machine, such as a Cricut maker. You can create your own stencils with a cutting machine with this tutorial.