I really like the character you’ve made so far. They kind of look like they’d be fighters in something like Mortal Kombat. The posing looks pretty good, too. The only thing I’d say is, besides the last one, they all kind of have the same pose. If you were trying to go for that as a style to just display the characters, then that’s good. I’d just recommend going and trying different poses, and experimenting with different items. Also, I’d say, on Frozen Master, maybe put something from “Item Right->Energy” into his hands, and maybe try a glow effect with it, though that may be a little advanced for someone new to this.
Well, yeah, welcome! You have some great stuff to start out, and I hope to see more!