The very last image looks rather... Unpleasant. But it's pretty cool other than that. The untextured floor of the scene throws the whole thing off though. You could always weld the bricks together, it wouldn't take a second really. And the UVs wouldn't be all that difficult to fix if they got messed with.
Normals are kind of flat, they dont really seem to have depth. It would really help to generate your normals from geometry, if it already is from geometry it needs to be higher poly. The pieces look like they could use a lot more bevels on the edges and such. The textured image is hard to decipher but it looks like either…
I'd say the model itself looks pretty good, except that you modeled in the brick creases. While it may only be for school, it's still very inefficient. I think the biggest downfall is with the texturing and lighting, though. It's extremely cartoony and unrealistic in every way. If that's the look you're going for though,…