Generic anime drawing

[Kai]

So I started drawing back in 2009, beginning with simple stick figures and then working my way up. I pulled up a drawing I made in 2010 and decided to redraw it to see all the progress I've made.

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2010:




2012

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Now I'd like to know what I can work on next. I know for one thing I'm terrible at shadowing and I can also improve body proportion. Besides that, any other criticisms would be appreciated.