Hi, i'm not experienced in Studio shots.
but i second that she's in a quite un comfy position. Personal preferences, if she can be positioned more towards the left side of the image, giving more space on the right... hm.. i think composition better. hm.. mayb she can sit normaly, cross-legged and crack her a joke n when she breaks the smile, BAM! the shutter goes too. Her smile ... seems stiff. over all the lighting not bad.
ar.. paiseh bo experience but i talk alot~ haha