Limiting where you have your art will limit your exposure and more people who can potientially want to purchase. When you look at any relationship where you display your work, get to know them because they are going to be the first person the potential clients experiences. You want the best who represents you and what you are about. I make sure to get to know the terms before entering into the relationship.
Once you have found one place, go for another, then establish this and get another and another. Rotate your work to keep it fresh. Having fresh work will bring more eyes to your work. Develop a story with your work for more people to want to be apart of it. Hearing the voice you have from the story you have combined with the imagery you have is powerful. Seeing beyond yourself and serving others through the work you do as a solution, your whole life will change.