I know what you mean about the globby paint- acrylics tend to get this stringyness to them when they get older. My first custom has pants I deemed "wooly" because I goofed up the painting a bit and he's got these little lines sticking up...
The figure looks pretty darn good to me though; the AT-AT driver limbs work great for a snowtrooper, definately. All in all I like it a lot better than Hasbro's snowtroopers to date.
Am I correct in thinking you took the AT-AT driver body, took off the head and chest panel, and added the veers armor and Snowtrooper head?
It's really a shame Hasbro decided to kitbash with POTF2 (do they still have Buff Luke molds sitting around, I wonder?) and Saga parts for the snowtrooper in the Battle of Hoth wave. I'm crossing my fingers a little bit that he'll be part of a VTSC ESB line though...