Simplify everything with shapes, whether triangles, rectangles, circles, cylinders, any shape you can visualize, and the most obvious /practice a lot/ no but really A LOT. Use references, take pictures, use your own body as a reference, 3d assets, anything you can use as a reference is valid. Most important, don't worry about the smallest details, focus on the major shapes! Draw again and again, in every free time you have, every time you feel like it, take it easy and chill out, you won't even notice you're getting better 🤗