@AntagonistDC
I think your two greatest problems are not actually related to your art but your attitude:
1; You confuse skill level with style and use style as an excuse.
2; You are very confident about some things that you evidently have a limited understanding of - no offense meant.
Are you serious? There's plenty of cartoons that lack realistic anatomy structure
You still don't understand. I say again: simplified cartoon anatomy is based on firm knowledge of anatomy. Otherwise it won't look funny, it will look bad and amateurish. The ONLY type of cartoon you don't need anatomy skill for is the kind where you intentionally draw shitty, like ragefaces and memes.
and the purpose of that is to make the cartoon characters look funny. I'm sure anyone knows this.
No offense but you are being arrogant, even if you don't realize it. You make statements like you are well learned on a subject when you clearly are not. Put your pride away, and start always looking at your own knowledge with a critical eye. never take anything for granted, and keep questioning yourself.
Don't confuse healthy self-confidence with arrogance, it's an easy pitfall.
Check out this artwork and tell me if it's better than my latest artworks as far as anatomy.
Yes, it is better, sorry. Once again: cartoony does not mean lacking anatomy.
Out of habit, I've been drawing ever since I was 8.
And I was doing the same from an even younger age. And let me tell you a story:
I was VERY talented as a kid - I'm not saying this to brag, keep reading on and you will see my point. So I was very talented, and surpassed everyone of my age greatly, without any art education whatsoever. In preschool I already discovered perspective and basic shading on my own, when fellow kids draw a rectangle with lines coming out one end and called it a tree, I drew a proper tree from the roots up with every single branch and twig and every single leaf drawn. I think I was around your current skill level at the age of 10. And I didn't even care much about drawing, I was just doing it for fun.
And just like you, I thought that various aspects of my artworks are good already. Actually, I thought I don't need art education at all, or doing those boring practices, drawing cubes and vases and other super-boring stuff they do in art schools. I though that's only needed by those who have no talent. And guess what, I couldn't have been more wrong than that!
After I finished secondary school, my friends convinced me that I should get more serious about art and go to art school, so I thought, well, I guess there is still something I can learn there, and it will also be useful to have an art diploma. So I went. And in my whole year, there was only ONE person who was better than me at the point of starting art school. So I still thought I'm good with most stuff.
Now, long story short... yes, I was talented, yes I was better than others at my age, but in the art school I soon realized, that I wasn't actually good. Not at all. At this point I was way beyond your current skill, and yet I had to realize that all of it was really shitty. My anatomy sucked, my shading sucked, my line quality sucked. Only when I was taught some of the basics, did I realize how bad my stuff was.
I was confusing arrogance with self-esteem and self-confidence, just like you do right now, and let me tell you from experience: That took me nowhere. Quite the opposite: I wasted so much time not learning and refining my skills, thinking that they were already good.
Moral of the story: Never assume anything you do is good. Always look for flaws and mistakes, and always assume that there is much to learn.
As for line work, you don't have any line weights. At all. All your lines are the same. Line weight means that some lines are thicker and more opaque while others are thinner and pore transparent, and this is how you give your line work depth and form. Here is a good summary of the basic concepts:
http://michaelmetcalf.deviantart.com/art/Line-weight-Tutorial-384281679