Your first step in becoming an artist is to apply to a school that has a good art program to pursue graduate studies in art, business management, and techniques. Being an artist is a wonderful career that will allow you creative freedom.
You should begin going to openings of other artists and familiarize yourself with the ways you sell you art. Another tip for being accepted at an accredited school of art would be to make a portfolio of your work. Most schools will require you to have a portfolio that contains samples of your best work.