One thing you have to know about babies is that you are working with a small window on their attention span, so if they start getting fussy, you can pretty much guarantee you are done. (I work with babies 4wks+ on a daily basis) If they start out in a bad mood, odds are you aren't going to be able to get them in a better one

I think you got some good shots and for some reason I love those ones where the baby is pouting or screaming...one is good, because it does portray a good chunk of how they spend their little lives
A few thoughts on the poses themselves. #1 would be good at a different angle, more to the side maybe? It looks great how the arms come out of nowhere, but then the jeans throw it off to me. #2, I don't know there is just something weird about the way he is sticking his finger in the babies mouth and that other finger sticking straight up. #3 nothing you have done could make it better, it's all about a better emotion on the babies face

That one is great other than the look.

#4 the focus is on daddy's hands and not on baby #5 Excellent shot! If you do it again, just try having mom/dad whoever holds the baby extend their arms away from their body a tad more. #6 I think maybe it would look really nice if baby was gripping lower on the thumb, not right on top, but it's great lighting and such. #7 hehehehe, just love a good baby crying picture. Great exposure and everything on that one.
I think with a few minor adjustments you could do great things! Wish you'd have had your camera when she was in a better mood that next day!