I think for a quick sketch it's great. I really like the texture in the blue square on the wall.
I like the freshness and freedom you seem to have with painting. Refreshing.
What kind of comments are you looking for? How about a critique? On the whole, the painting needs plenty of help compositionally, texturally, values, colors, etc. You need to have a central focus--perhaps conveying the emotion of the figure, her pose, etc.--then let all your decisions be based on that. So if it WERE conveying emotion through the figure, you would want the figure to be well realized (details, values, shapes, colors) and then make sure the rest of it supports it (without distracting).
If you're interested in learning more, I have a few step-by-steps and instructional videos posted on my website and blog.
Best and happy painting!