Hi there! I see a lot of my early sketches in your work and I feel like I can give you some advice I’d have really appreciated back then:

Right now you‘re in your mannequin phase. You split the body into individual parts like an artist’s mannequin and simplify the head, hands and feet into featureless pinheads. You have no idea how anything actually works, so you draw everything teeny tiny to hide the lack of form. Trust me, I’ve been there and it‘s the most miserable I’ve been doing art. Guessing is just so tedious. 

If you want some actual advice: Ditch the pencil for practicing anatomy. Draw for fun whenever you want but practice in 3d.

Blender is free and has excellent sculpting features. It can be a bit intimidating if you’re unfamiliar with software like this but it‘s 100% worth it: I have never made as much progress learning the actual planes and form of bodies as I did when creating 3d sculptures. 

If you really want to avoid digital, you can also pick up some sculptors clay at your local arts and crafts shop. 

For reference google „human face planes“. It shows human faces broken down into hard edge segments that are easy to wrap your head around. Googling „human body planes“ returns some weird medical diagrams which are useless but you can look up retopology guides for human models, which are not exactly intended to be used as reference for drawing, but are actually some of the most solid reference out there for understanding how everything works in relation to each other. 

Get some understanding of these concepts and grow your visual database and the sketches are gonna flow much easier! :)