My 2 year anniversary gift for my boyfriend, I used photoshop to take a picture of us and put it into straight black and white. I then cut out all the white sections (using an X-acto knife). Painted the canvas with a base color and waited until it was almost dry, placed the intact stencil on top, and spray painted over it. I waited about 5 minutes until it was almost dry to take off the paper "stencil". And Volia!