Please help me in opening a business based on marketing, branding and creativity with minimum or no investment?

I am from a marketing and management background. I am a self taught illustrator/vector artist. God has gifted me with the sense of arts. I need help in opening a business that could be the gist of qualities that I posses and have little or no investment.

Show your portfolio to some marketing and advertising agencies, and see if you can pick up freelance work.