Very well rendered beast and woman, both in terms of form and colour. Two things, though ~
You seem to have gone straight into the detail on the beast without fully defining its musculature. As a result, its body looks a little cardboardy (although its head is superb)
Thin vertical spires (your background) don’t suit this piece, they break up the tension and fluidity of the creature and overall make the picture appear very static. Personally I’d go for much chunkier, semi-diagonal rock formations slanting right-to-left to contrast with the position of the lead, but that’s just a suggestion. I’d also put a bit of solid landscape in the background and try to integrate it a little more with the foreground, otherwise it may end up looking a bit like a stage backdrop.
Really good job!