Graphic Design Business

Hi, I’m majoring on graphic design at a community college, and I think I’ve enough knowledge to start my own small business, I could start with small companies and individuals, but I don’t know if it’ll work out, I already have a company that can print all my work for an incredible low price, business cards, catalogs, brochures, menus, flyers and all that, I’m afraid that It won’t work out.