How good is the photography scene or contacts you have at the moment? I'm only really able to provide anecdotal evidence as selling art and creative products is difficult everywhere.
If you have a thriving photography community, I suggest talking to them and going via word of mouth. Volunteer for free photography exhibitions, ask to be someone's assistant, find out if there's a good studio around where you live that needs a part time shooter or will let you rent the studio for a fee. If your stuff is good and you talk to people you should see an uptick in sales if you work at it long enough.
Submit your work for competitions and use that as a way of bolstering your reputation. Additionally the internet is a great platform for showing your work, flikr is good to start with.
Remember an agent is only going to be interested in your work for particular things. If you specialise in fashion photography that's going to be much easier than photojournalism, and weddings tend to be more regular than either of those. You're only limited by what you shoot so the decisions on where you take things will ultimately be up to you. Be aware that many professional photographers find their personal work hard to sell as well.