I really like your art, though I want to suggest you one thing:
the overall piece is nice, but if you look at it you may notice how all edges are too fuzzy or blurry. I assume you used only one brush for this painting, and it's a brush with a medium/low opacity. I suggest you use a brush that has a stronger edge and opacity, for those areas which are supposed to look sharp (such as the horns) or to define edges (like for the clothes, or the edge of her jaw. when starting a piece, try to use a brush with high opacity to make the overall shapes, then you blend the different color gradients using a lower opacity brush. Hope this helps!