Gift for Christfirst

I offered to draw *christfirst a picture a while ago. She asked for something "abstract" but since the elements are recognizable, I think it's more graphic or modern style. Maybe someone with a BA in art history could enlighten me.

I think I'm done with it... What to do with the wall frustrated the heck out of me, until I accidentally got something that looked like cardboard, and I liked it.

What I learned on this project:
How to use Photoshop patterns. (Thanks *redheadstock!)
How to use adjustment layers. (Closest think PSE has to layer masks.)
How to use the "soft light" layer type with black and white to do hilites and shadows. (A tutorial on the Wacom site.)

Started with Google Sketchup and finished with PSElements 2. The frost is from a photo I took myself.