I will say, looking at her, that she is quite beautiful but I can also see she's someone who carries a little weight around their neck area.. some people just do. I've shot very plus size people with ZERO double chin and I've shot thin people with thicker necks..It's just one of those things.
Also I think you did a nice job as a whole on your exposure here.
#1 - I really think it's fine, if it was me, a little careful PP would help in her chin/neck area but I don't think it's terrible or particularly unflattering or anything.
#2 - I think this is cute, although I would like to see more of her neck here because his hand blocking the whole neck kind of gives a floating head impression (just to keep in mind for future.) Also, is that a hairband on her wrist? Those things are the devil!! LOL
#3/#4/#5 - Here's the trick to the laying down pose: They need to lay on one another's shoulders. That's how you keep it flattering. Nobody looks good in this pose without a little change of angle. Like this:
#6 - Flattering wise, I think it's fine but the light is a little hard so they look squinty.
#7 - If she's sensetive about her weight she might not like the tiny bit of tummy roll there. It's a pretty normal human stomach but with tee shirts you have to be careful.
#8 - Just the angle and light and everything on this, it's probably not my favorite. The background is a little distracting. Also having their legs perfectly together kind of makes them look like they have one leg each ;)
#9 - She looks quite top heavy here, just with the pose and the shape of her body. Not the worst I've seen by any means, it could just be a lot more flattering.
#10 - I like this one quite a lot actually, I think it's a cute idea.. I would have preferred no ponytail though
#11 - I like the composition better on the B&W.
#12 - Now this one is very flattering. I like how her weight is distributed, though it could be pushed even a little bit further. But you know have you have a random guy in the background? Hehe.
#13 - I appreciate what you were going for here, it's just hard because of the buildings behind the sign. I would liqufy out the bump on the back of her shirt if it were me.
#14 - To be honest, I don't love the body langage here.. She looks irritated and he seems like he's trying to apologize to her. I normally think if she's doing sassy he should be doing GQ, if that makes sense.
#15 - Lighting isn't my favorite here, they're a bit under and there's no light in her eye area.But, I do like the composition.
#16/#17 - I like these.. I would even push it a little bit further and make them more silhouetted and the stadium slightly less bright.