Really good, I've looked back and forth between the logo and this set and the similarity is immediately recognizable. What's also cool is that a few intentional differences ultimately make it look better. For instance, the treads are black instead of white, and there are also studs you added to blank looking areas.
The one thing I'd take away is that there are better helmets to put on the minifigures - I'm pretty sure there's a black helmet and a white visor that would look almost identical. There's probably a Star Wars visor that even has the same shape.
Anyway this really looks great and I'd totally buy a set for this. At the very least I really want to see a video of you building this. Or you could record yourself taking it apart and play the video backwards.