Nice. Reskinning is where I got my start. Then I moved on to really basic new models...some walls (ooo...boxes!) and hovering cylinders (
tenser's floating disc). After that, I experimented with some other shapes, and adding/taking things from existing models.
Lots of reading and watching various tutorials, some asking questions here in the community, and lots of just playing around with gmax...and now I can make ~75% of whatever I want for my PW myself. I'm still not very good at texturing brand new creatures, and emitters I usually take an existing one and modify the options, and I've only done some basic animations...but I can make some really nice weapons now.