Hey this looks really cool and fun to do!!
What you need
-crayons (you can even get some from the dollar store)
What to do
-Hot glue the crayons on the board in any order you want i recommend a rainbow theme cause it looks better
-Set up the area which you wanna work in.
you can put newspapers under it so you dont get anything on your carpet/floor
and also try to cover your walls so the wax doesnt splatter
-Get a hair dryer and slowly move up and down. if you want it straighter and better that is.
cause if you do it fast and on high then its going to get smeared and look messed up