Get out there and find fairs and markets, where you can get some space to display and market your art. The best places you can find in fall is a local craft fair, which is ideal, because in the holiday season you can target people, who are there to buy gifts.
Be competitive! Research prices of similar art items and register yourself with an online auction. Accept all modes of payment, and take attractive pictures of your work and display them accordingly so buyers can access your work easily.
It is always good to be advised upon how to sell your work from a professional art dealer. He can provide you with tips that you haven’t even thought of yet, and it can help you market your work in a professional manner.
Look for an art gallery to display your work. It can help you generate your sales, but bear in mind that you will have to pay a percentage or commission to the art gallery from your profits that you make after selling your spray paint art.