My 11 year old kid did most of the work {I did the buying for the canvas and crayons haha}. Super easy!!!

Step 1: Arrange 45 crayons {or more depending on however big your canvas is} and glue them on. I like to arrange mine according to its own color family.
Step 2: Let them stick.
Step 3: Take out your blow dryer and start having fun!
Picture
Finish product, tadaaa...