i think you should crop around 150 pixels off the bottom of this. Her hand looks freaky - its too long (i appreciate its real but it still looks wrong). Also her neck looks all fat and bloated. It could use a soft shadow line running from her mid ear down to the front of her shoulder. Just some constructive criticism, hope it helps.
Oh my stars, you have talent! This retouch completely changed the quality of lighting, texture and transformed the composition to even more eye catching. Wouls absolutely be interested in working together!