Some iffy anatomy on the left girl I was wondering if someone could fix. The line at the top of her inner thigh seems like it should be lowered, because it makes her buttock showing between her legs way too prominent (compare it to the other two.) Both her buttocks might be too prominent though.
Here's a screencap from the series (Freezing) that might also be of help (though I'd prefer if they weren't reduced to this extent):
https://files.catbox.moe/ru59km.jpg 