>>3790574The humerus is too long and the forearm is too short. Thighs are too long. The fully extended arm should have the tip of the fingers at half a thigh's length.
Do you actually block in the main masses of the body like in pic related? Just imagine two connected boxes, one for the chest and the other for the hips. If you offset them slightly you obtain a more dynamic gesture (watch Renaissance statues to see how they use this, contrapposto or figura serpentinata), and it's easier to draw the legs and the arms from there. Even just a little bit makes your figure appealing.
You need to learn the muscles to draw a good arm. There are subtle shapes even in feminine arms that are given by how the shoulder inserts into the arm etc.
If you're learning you need to understand the basic mannequin, draw perspective lines if you need aid to place the main masses in space. You should be able to draw a mannequin in any position, pretty much. After you know how to do that it's all about building the anatomy on top, anatomy is just memorization, it seems like a lot but you start with the big things first like the general shape of the chest and the main muscles and then you go in depth with the smaller things.
The best way to go about this is to make characters you care about and keep a book like Bridgman or Loomis handy and follow the process as you go. The final product being something you care about will make studying easier, don't fall into the grind meme.