Very good. You're 16. Most 16 year olds I know are physically incapable of borrowing from reality in their drawings without screwing up proportions. You have great drawing skills.
Your painting is impressive too. I have never had the appropriate skills or patience to paint (or draw) hair properly, which is masterfully handled in the first painting, with the guy who figures himself a bunny. As for the rest of your colouring, it's above average but not up to par with your drawing abilities.
You seem better suited for chalk, pastel or coloured pencils than oil. In fact, I thought the bunny guy painting was done with chalk instead of oil until I read your comment. This is not a criticism, by the way, just an observation - You just strike me, from what little I've seen, as someone who could get the best out of chalk as an expressive painting tool and you probably feel a little uncomfortable painting with oils.
The only criticism I can offer is profoundly subjective in nature:
Shame on you for your fondness of those anime-nancyboy-type drawings. Shame on everybody for their fondness of anime-nancyeverything-type things. Why am I the only person in the world with negative feelings on anime? Why am I so alone? Why is the world so cruel to me? Why am I going into a self-obsessed emo-worthy rant?
The only thing I hate more profoundly than anime is emo self-obsession.
How am I supposed to whine now? Why does mother nature play such cruel tricks on her children? Does she have a heart?
Why is there violence in the world?
In a nutshell:
I don't like anime.
So yeah, I've said it, that's my spectacular conclusion.
Sorry I wasted your time. I'll retreat to my hideout now and I promise not to re-emerge until new artwork makes it's way here.