Hey seems you like to use alot of playfulness in your stuff..I think your having issues with colors going into fields, bounds, or penciling whatever you want to spell it. If you can believe I actually like your concept ideals.. just you need some focus in your methods or your, on one of the longest roads if you want to hoon or develop into something more.
I was thinking your take on things is almost depicted in Cell Stills, sorry I don't know what they are called or used to be in animation. I'd imagine Funkenstein could help you with that or maybe Bomu. Truly tho I wouldn't and don't recommend Drawing/Tutorials cause you'll miss your real mishaps what make art/fun fun.. If you can find a reel or book with alot of these Cell Frame grabs I think this will help you understand how things flow.. Hey I don't want you to study the books at all really just look through Cell Lines you'll start to compose your own ideas cause you look utterly lost..
I think if you were to view a bunch of Cells without the coloring this will help you understand how colors and boundaries form.. The outside from within approach I guess if you want to truly get better, but your just lacking some good old focus factor..
The other suggestion I guess is you get Cells and do the coloring yourself this should help you try to understand how difficult and interesting lightning makes those bounds.. This should eventually strengthen your mind to be able to actually draw.. May sound silly or childish but hey EVERYONE had to color in the lines at some point. Oh boy did I suck when I messed with DA (digital art). Took me awhile to get the drift from seductive allusive Pencil Shading to intertwining intense colors...
One of the things that drew me into doing art was seeing the advancements in VideoGames and the highly cut stuff in game manuals just caught my attention. That's probably what awoken my drawing skills, like I said before I'm pretty strong against Tutorials in how to draw. I'm more into your own self findings/revalations and observations that's why I never really try to pin point words while I try using a slew of them instead to convay a more realistic meaning.. I try not to give my own subjective taste to people, just what I'm seeing in "you" the individual, hah...
Oh and don't be mistaken I'm not talking about Manga whatsoever..
That is something with a similar grab but the form is actually different.