I love the idea of your character here. I think with some practice on Perspective and proportions you could really improve your designs. Dwarfs tend to be short and stout which leans into shorter thicker legs and wider shoulders with a bit of a belly. Your chapter overall perspective isn’t that far off but when you look at the axe and other details like where his belt and garment meet, these lose the perspective. If you really work on the mannequin you can sort these details out with centerlines and such. I’d start with just practicing mannequinizing references to see if you can get the perspective to come more comfortably. Once you can do that, then try and add the details like bulbous noses and beard details etc. on top of the mannequin. I hope this helps and gives you some path forward on what to practice.

