How do you sell art online?

I am offering, to sell any previous art on my page, or that i have drawin. Also i am offering to draw characatures of people, or also draw your character in my style.

I will be using traditional media, you tell me the pic you want me to revise or you tell me the character you want drawn n i will draw if for you we can talk about the money before hand and everything.

that is basically wat i want to do. I was actualy also going to get a permit n try to make a business out of this. i want to do this,
just need help with how to go about it.

thanx guys