Great start, I think I was in a very similar mental state when I first found this site. At the age of sixteen I found this site, decided I was on the wrong path and threw away everything I had ever drawn (cheesy deviantart style anime junk), starting all over from the foundations. Its good to see more people are taking that path before they get stuck.
That said I really like what youve got going on. Your charcoal work is the strongest I think. Keep pushing the foundations (anatomy, proportions, value, some colour and working from life) and I'm sure you'll see the quality and confidence of your work skyrocked exponentially. Make sure you get posting around here regularly and taking in everybody's helpful advice.
More in terms of crits, I think you should try to move farther from stylization in your work, at least for now. Get a solid foundation in realism, and by the time youve got a strong hang on those skills you will not only know how to more successfully exaggerate your figures and other subjects, but you're gonna develop your own unique style and approach to subjects and media.
I'll give more specific/indepth crits once i can tell what direction youre going in.
you actually show some pretty good rendering skills in a number of these, the main issue though is the overriding 'style' factor that is seeping into them. Style is a cruel mistress to break when learning (as most people know - because honestly, I feel most people start out drawing 'a style' they like, rather than specifically studying art ). Unfortunately once you get a certain distance in, it's painfully difficult to break - but we gotta do that .
Maybe draw a bit more from life/reference photograph? I think this may be all you really need to push your work further, because you have the rendering ability, and good line quality, just have to apply it to the basic information rather than full compositions (which is what many of these seem to be aiming for). Anywho, good work, and keep trying to grow .
You've already given yourself the best advice possible. Along with that - drawing from life is the best way to learn.
I'm currently doing one still-life a day, which is teaching me loads. Care to join me?
I think you are awesome, and I wish you the best in your endeavors, but I am tired of repeating myself, I am very busy with my new baby, and I am no longer a regular participant here, so please do not contact me to ask for advice on your career or education. All of the advice that I have to offer can already be found in the following links. Thank you.