I'm impressed with the skeleton's teeth. Perhaps the bottom dark line under the teeth might be improved by lightening it, thus tying the teeth into the jaw better.
To find a new critisism
, I'd say the gravel basing-effect loses some of the feet that are already too shallow. The Goblin seems to be sunken into the ground, for instance. Don't know if it would be convincing, but a painted, faux texture might achieve a suitable effect with no loss of foot depth. But that's my imagined preference, since I tend to avoid wargaming basing, anyway.
The only other criticism I can think of is you need better light when you make your pictures. I wanna see more of those colors, which otherwise appear flawless. I too really like your work- aces all the way. Looking forward to more.