As for the original topic you've done an excellent job on those wheels. I've been trying to teach myself 3d modeling for the last couple of months off and on. I've started a couple of different projects including a garbage truck and finished some basic tutorials like a sofa and cardboard box. I've started trying to make a model of Bullseye but I haven't done much on it in the last week or two since I've started a new job and been trying to find a new place.
He doesn't have a head, hands/feet or texturing yet, but this is what I have so far.
I've been using blueprints from Marvel:Ultimate Alliance 2 and I started out trying to do Electro since he seemed pretty simple, but as I got into him I noticed he was apparently wearing some form of jacket and I wanted something straight forward so I started over with Bullseye.