I'd like to see bigger sizes for most of these images. But what I did see was just the common disproportionate body part sizes, off shoulder alignment a couple times. Some work on defining male and female curves and such would help too. A lot of the women in these look beefier/manlier than I think your intent was.
"Cogito, ergo es eggo." A.K.A. "I think, therefore you are a waffle."