To Sum Up Your Art:
You have potential; your style looks like it could grow to be more unique, and your ideas, like in the Yin Yang piece, are truly different and defiant of what we're used to.
However, you still need to brush up on details. Even minor details make a different in a single piece. Also, to retain the most quality out of a picture, I suggest you use a scanner, or if you have a tablet, try working with that. Most other artists usually look down upon people who use trivial means of displaying their art with cameras and webcams; it just isn't professional.
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