You can certainly make a career out of it, in a variety of ways. Many businesses have in house graphics departments to handle all of their slide shows, their print ads and publications, as well as all their graphical work for their web site itself. Or you can get hired by an internet marketing agency as part of their in house graphics team and get a ton of great work experience and learnings from your peers along the way.
Even if you go at it alone, look at sites like the Envato network, there are individuals on there making a killing selling thousands of copies of various things. You can see how many of a given product has sold and some of those have sold like 20 thousand copies at like $50 a pop, do the math.
Even if you go at it alone, look at sites like the Envato network, there are individuals on there making a killing selling thousands of copies of various things. You can see how many of a given product has sold and some of those have sold like 20 thousand copies at like $50 a pop, do the math.