First you pick your crayons I chose a pack of 64 for mine because it had the best selection of colors. I chose a gradient pattern for mine but you can do whatever you want.
Step 2: Before Gluing
This is what one looked like before gluing. It will basically look the same because you didn't change the colors. (Or did you)
Step 3: Melting
You might want to get something to protect your walls because you are gonna have to lean it up against the wall. That way gravity will do its job. for melting you can use a hair dryer or a heat gun the hair dryer will work better because it will be easier to control.