Wonderful work!
Very insightful, thought provoking.
Can't wait to see more.

Hi. I was raised on "Productive" criticism so if I seem rather harsh or something of the sort please don't think that its personal. In fact, I usually don't leave notes.
#1~I thought was interesting. The idea of the earth being born. However, if you look at a pregnant woman her whole stomach protrudes from every angle.Her face, I don't know if you meant to make her chin pointed at the bottom, and you might want to show her neck more. Her breast look flat, and one plus to being pregnant is that your breasts enlarge (even when not pregnant breast aren't that flat, try and add shape).
#2~I like the background, use of color, and the woman. The man looks as if his nose is rather more of a dark circle shape, and his figure looks flat, elongated and he need more joints. The arms look like two long bended bones.and the legs are disproportionate.
#3~The hand look disproportionate and are different sizes. Her left leg looks too small and disproportionate to her right leg. And the skirt would move with her more. Her head looks as if it has been moved forward or to the right.Unless you meant for her are to be stretched in front of her, than the shoulder is too far forward. (see note about neck and face -this might have caused it).
#4~Very Good. In my opinion, the best of them all. The tree's leaves/branches looks like a cloud or storm which I this is very cool. Especially against the contrast of your figures calm serenity. Very proportionate, not flat. The detailing is nice. However, if you look one hand has a larger palm. His exposed foot looks short, as if he has no ankle.

I like your Gallery.