/ic/ - Artwork/Critique

Hey, /beg/ only got me shitpost so I figured you fine gentlemen can give me some solid advice. I realize its unfinished, I'm more worried about the large forms (torso, hips, legs) than the hands and faces. Those are separate studies for me and I can do that myself. I started studying seriously a few months ago so my construction skills are still very lackluster. Crits on the breasts are very appreciated because I can't seem to draw large breasts for the life of me.

>>3125254
Forgive me if its annoying, I wasn't sure if I should post 3 different pictures or all in one.

I know 2 of the characters don't have faces, I am not super worried about that at the moment, boobs are hard and I have a hard time imagining how they rest on the ribcage.

Don't worry too much about the hands and feet, I know I'm hiding them because I haven't done a comprehensive study on them and I am going to work on that. Just based on the bodies, any advice? I need to work on my construction skills but I don't really know where to practice the most.

Also I know the left nipple on the upright girl is placed wrong, I noticed it after I exported it.