Both are nice shots.
Here's my two cents... In the first photo, there is creases left from the clothes they were wearing before. And, I find the combination of the tattoo and the shadow on the model on the left's elbow to be any eye catcher. Bent elbow next time. Model on the right, the tan lines, below her top seem strange, particularily on her right side where the line of pale transitions more abruptly to freckles and tan. On her left, the transition is more gentle and I doubt I would have noticed if the other side was the same.
In the second photo, the skin tones and shodaws seem to be playing off each other between bathing suit pieces, particularily her right side. Dodge and burn/blend?
On both, I'm not sure how I feel about the warm and cold colouring in the background. I'd be interested to see it with less satiration or the highlights back in. The cold/blue seems to have bled into the model's hair in the first photo.
There. That's all. I've got.
Nice work. I'd be happy if had done those.