It all depends on your definition of professional. I think professional, by definition, just means you get paid. For me, it's more of a mindset - the way you treat the customers, how seriously you take the art, etc... I still do other work to support myself. Though, occasionally, there are really good days (this week I sold 2 paintings, and all my bills are paid for 2 months... but I haven't had weeks like that in a while). I like adventure, so... the struggle is part of that.

You've definitely got the skill. If the definition is "Make $ for art" - just start selling your art, and offer your art services. I"m sure you'll do really well, really fast.