this was really good
(ignore the following if the overall sharpness was the aim)
maybe a little bit of DOF could be added, to focus viewer on some feature, but that is just IMHO, also - I often will play with opacity for hair to get it to look more natural and less texture-on-surface look, sometimes adding subd modifier helps, sometimes smoothing, but some hair will break if you do
maybe reduce normal value for legs surface, so the skin looks a bit smoother, and maybe adding body hd details from some figure to give knees a bit more character