I'd say number 2 was a little under exposed and I'd agree with the pose isn't overly flattering. But the rest are very solid. My favourite is no4. I personally think that's better than the final image (even if the knee was fully in shot [emoji13]) I prefer the eye contact but that just my personal opinion. Good work my friend.
If this is something you don't usually do, I'd say you have a great foundation to build upon. These are way better than some others I've seen, who've been doing it longer.