First house is deffinatly the best and comparing it with the other two models I suspect it is from a tutorial ( doesn't matter, if you did it, then you did the modeling and it's good training). The second house needs a bit more work( both texture wise as modeling wise) And the Mecha tank....trust me when I say that no VFX supervisor wants to see one of those...ever again LOL ( bit of an insiders joke, in a couple of years you" ll get it too ) Just keep it up and we will have a great 3D artist among us