How could i improve this piece? Comments

Hey hey,

This is an early start of something that i hope to put onto KirupaVille, (hopefully). I know it pretty basic, and i just want comments on how i could improve it. Just so u know im an amature so its kinda crap.

BTW. The whole idea of the pixel building is that it is meant to be a rubix cube, i juts cant get the borders and shading rite. PLUS, I THINK THE COLOURS MIGHT BE DISTORTED WHEN I SAVED IT SO IGNORE THAT.