Upload & Sell: Off
Welcome to the forum. Good to have you join us.
The images look good. Here's how I think they can be improved
#1. The girl with no hands. The elbow pointed at the camera doesn't work. Usually when you have empty space on viewer's right, the model looks or faces in that direction.
#2. This one looks good. The crop running through her right arm is not good. Plan the crop before you "click".
Where will the bottom of the frame be? Just below her hair? If so, don't let the arm lead us out of the frame. Bend the arm, keep it in the frame.
#3. Another shot with the model looking out of the frame rather than into it. Full body pose looks good. Clean up the edge by removing the object near her left elbow.
Post some more.