How is this mare's conformation?

She is quite pretty! I love the slope to her shoulder, and she has a nice short back. She looks like she would be very strong from behind with those hindquarters. Despite what the poster above said, she is not at all downhill, she is actually quite even. The only thing that I see wrong is that she looks a little over at the knee, but that could just be the way the picture is shot or the way she is standing.