Will this become regretsy?

After much thought, I've (kind of) decided to open an etsy shop, once I'm a little more confident in my skills.  I enjoy sewing so much, and there are programs and patterns and things out there that will sell/give you a license to make and sell in a shop.  Why not?  Etsy seems to be the thing to do.

I've contacted my state's business administration but who knows when I'll hear something.  Does anyone have an etsy shop?  Can they give me any pointers?  For instance, did you apply for a business license, or just decide to do it one day?  I'm still a little on the fence about this (mostly I'd like to do the Oliver + S boutique sewer program, and I think I need some practice on those outfits before I declare myself a businesswoman) but it's something that's in my short-term goals.  I like to have as much information as possible before going into something, so any help would be much appreciated.

Wish me luck!  Oy.  I'm going to need it.