I used modge-podge to adhere the paper to the canvas. I tried to draw silhouettes of cars and trucks but they looked like junk so I went to Target and bought wall decals that went with DS's bedding. I stuck those on the paper and modge-podged over them so that it would have a nice texture.
The best part was DS's reaction when I put them up. He was super excited. :)
If anyone knows the brand of patterned paper that these are, I would appreciate you letting me know. I can't remember for the life of me.