Nice work, I think it would benefit from a darker background than this bright one. The white look draws my eyes away from the model and the fashion on her and thats bad.
The reflection also drags my attention away.
#1:
Dress looks great, expression is perfect, pose is nice. Watch the left (in the shot) knee, which looks lumpy in the shot.
#2:
Interesting pose, dress again looks good, expression doesnt really work as well though. Its a good "fun" shot, but doesn't sell the product as well.