Hello,
I'll start by saying I think you did a great job, you get better with every picture you colour!
I'm really loving her face here, the soft shading with just a few sharp violety (don't know a better word) shadows works really well.
Digging her hair too, I always find blonde hard to colour, but here you've made it look effortless.
Her collar, I'm not liking so much. I think the soft linear shading makes it look more like rippled silk than fur, its pretty, but its not quite right. I would either leave the collar looking quite flat with just cast shadows on it to make it look like thick sheepskin. Or you could go to town and use lots of sharp, thin, curving strokes to give it a really furry texture.
The jacket looks great, I particularly like how you coloured her boobs, it looks very stylish.
The belt looks a little rushed to me, which is a shame, because it looks like you put a lot of effort into her face and jacket. I would make most of the shading on the belt a lot lighter, and leave the darkest tones for the left side, right near the buckle. You could spice up your colouring here by adding little highlights on the upward-facing edge of the buckle holes (its hard to explain, just grab a belt and examine how the holes catch the light) Paying attention to these little details will make your work look much more pro.
The thigh is confusing me a little. (sorry if I'm coming off over-negative, I do really love this picture!) The big shadow down the middle of her thigh makes it look strangely hollow. The big highlight on the left of the thigh doesn't make a lot of sense to me either, as the rest of the picture suggests that the light source is on the right. I do like your choice of fleshtones though, and you did a great job on her butt- I almost wanna poke it and see if its squish-able.
Great job with the bubbles, I think making them different sizes was a good idea, it adds variety to the image. Also her boots look very cool.

Sorry to be so nit-picky, you can tell me to shut up and go away if you want ^_^;