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How I did it: I found a client, designed a piece, painted it, and mailed it off to California. Kinda sad to see it go so far away and I'll probably never see it again, but that's the life of an artist, right?
www.liberty412.etsy.com (not much there at present, but more coming Spring 2010!)
Lessons & tips: Just do it. Art is subjective, and eventually you will find the person whose taste coincides with yours.