Here's what I used:
16 x 20 canvas that I had laying around
64 count Crayola crayons
Hot glue gun
I laid out the crayons the way I wanted them and then hot glued them down.
Then it was time to get to work melting...
I LOVE it! I am so happy I finally made one.
Now I just have to find a good place to put it. :)