Vector Imaging A Sketch

A sketch I drew for a friend, which I managed to 'vectorize' in Photoshop, as if I was using Illustrator! I wasn't even sure it could be done, but I put in the hours to figure it out. The original sketch is still visible, but set at a low transparency. There are then multiple layers covering the sketch, in different colors and opacities. I'm sure I would have saved a lot of time by using Illustrator, but I don't have that program yet. Hey mom! My birthday is in January! :)
Oh wait, my mom doesn't read this blog! Huurrrumph!

"Spirit Of Christmas"