Thanks for sharing.

I am going to point out couple things that bother me. Please know I am only trying to help, and maybe you are already aware of this, if so, I apologize in advance.

Art is subjective, let's get this out of the way first :D
Her bottom is too close to the edge of the frame. It is too tight, creates tension. More breathing room would be nice. The image is tilted in a way that makes it seems like the chair will be falling away. Hair in the right, again too tight to the frame—it creates tension. Some highlight on her face could be toned down just a little to match her body skin. There's a big color shift from her face to her neck. It could be makeup but I feel like it would be better it they were toned closer to each other.

Face expression is solid, I like how the viewer's can see what she is into, it tells a story. Is this a place where people would practice? I don't know. I am not an expert in this kinda stuff.

Keep taking pics and keep sharing!