Home Witch

Hi,
Some years ago i used to paint and also do the selling of them, but i found that trying to both, create pictures and sell them, was proving too much. Something had to give - the result was i could not focus on what i did best -which was paint.
After some years away from paint and canvas, i have decided to return to painting - this time however, i would like an agent to see to all the selling part.
However, i have no idea as to how to go about getting an Agent.
Has Anybody got some advice for me?