Artist training ground sketch dump

I was able to participate in Equestria Daily's Newbie Artist Training Ground this time. I actually was able to finish something on time for all 15 days. I probably would have lost steam if it had been a 30-day event like usual.  Here are my favorites.  You can see the rest on my tumblr.

I'm thinking of maybe actually finishing up and coloring one of these, which one do you think I should finish?

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