Not finding fault, but the excellent image works better for me with the figures more centered in the frame. One of your models seems to talking to the other, the turn of the head leads my eye away from the breaking waves. By masking the screen with my hand covering most of the water works best for me. A beautiful print!
Actually I haven't seen the difference of their legs until you said so. The light comes from the left side (almost 90 degrees on the left), so maybe Samuela (the left girl) is shading Sandra? On the other hand, Sandra is a bit darker too.