Not a bad figurative piece, though I would have liked to have seen more time and care taken with the shading, around the stomach and chest for example could have been blended better. Her ass looks a little square too (what a line) and there's rough lines on the arms and back that should have been smoothed out.
The proportions are good. and I like the use of colour. Maybe tone down your signature and see how a gentle gradient backgrounds look in your art.
Keep it up.