/ic/ - Artwork/Critique

hey, I've recently gotten a decent flow of motivation to draw, and I wanted to start drawing bodies and people, specifically women, instead of my usual interest in plants, trees, and doodles.

How do I make my bodies more human realistic? What are some good ratios to follow? Is there a template for drawing a female body facing forward similar to a face template? I'm having trouble with breasts too specifically. And a bit of criticism would help too thanks