I can give some tips, yes!
I can’t make a complete explanation, just some tips.
-While working on the theory, work on your hand.
Sometimes using the spontaneous stroke can improve a lot your drawing. Using a insecure style of sketching, can hinder you.
I suggest to make some hand exercise everytime you start drawing. Like this one:
https://www.youtube.com/watch?v=b8M3WShsld8&t=277s&ab_channel=nicolasammarco
(continues into the reblog, Tumblr is fighting with me)
-In animation we have a principle named Solid Drawing.
It means that when you draw, you are not representing flat figures, but solid figures on a flat surface (the paper sheet).
This is solid drawing:
Every piece of the body is not just a group of lines connected together, but real solids, that YOU, artist, see like filling a space.
You can rotate them in your mind, you see their area, their shadows.
You don’t see this:
You see this:
Not this:
But this:
No:
Yes:
Following this principle, stop thinking an arm on a paper sheet like a group of shapes and lines. This is what another artist produced while thinking about solids. You are looking to a surrogated. It’s not a real, tridimentional figure. It’s just a REPRESENTATION of what a real, tridimensional body in the space is.
This is ok. But it doesn’t always help you, expecially if you have not learnt to thinking in 3d:
Once you started to train your 3d vision, then you can use your anatomy book and learn the body piece by piece. You’ll eventually see humans made by solids intead of lines:
(: Hope it may help you