Chad's Christmas Gift

I finally finished it! I did the sketch for it a while back, but didn't get to start coloring it until yesterday. It being the holidays, we're about to get very busy, and so I wanted to finish it before Christmas. I'm rather new to digital coloring and all so any suggestions and tips would be greatly appreciated.

asked me to do a Christmas pic of him similar to the one I did of me.

Time taken: somewhere around 7-8 hrs, kept losing track.
Tools: PS CS3 Extended, drawing tablet.

snowflake brushes: (c) [link]
Border brushes: (c) [link]
artwork (c) Me