Do you mean you have two models on one day or at one time? truly have fun:)
Here are my comments
1.The backgroud in #1 is blurred,that's fine, but it seems like you choosed a wrong position in #2#3#4. the ion frame looks no good in the photo.
2.The fill light in #2 seems like too strong, is it flash light?
3.The details in #4, the sagging clothline between the arm and body should better be straightened by PS
Anyways, I admire you had more chances to pratice, obviously the more you practice the better the photos are.
