The thing is, Cephi, I feel that you have potential. You have your strong points, yet there are some things that could use a bit more refining. The big-head style, if that's the style you like to work with, is perfectly fine, as it's your unique style. Hell, the style that influenced me the most is Disney. =/ Body proportions you've gotten pretty well. You know how to form the torso, shoulders, and hips. The length of the legs and arms are decent too, in proportion to the torso. The hands, however, seemed a bit tiny.
Hands and feet, though, are difficult to draw and size. For foot size, though, here's a trick I learned:
Your foot is the same size as your forearm, from elbow to wrist. When drawing feet, matching the shoe size to the forearm size will help. Also, your hand is roughly three-quarters of that length, and your middle finger is as long as your hand is wide.
Another trick I learned is when drawing the basic structure of a foot, draw a floppy figure-8. This will help determine arch and curve of the foot.
Torso proportion and structure I think you have pretty well figured out. And from what I can tell, you have an idea on how fabric lays on and reacts with the body. Honestly, you do not suck. You have potential, it just needs some refining. So, keep on drawing. ^^