Things You'll Need
Instructions
Lay down a large tarp in your painting area. The painting materials are messy and will stain anything they come in contact with, so the tarp will help to protect your floor.
Lay your muslin backdrop sheet flat over the tarp. The backdrop can be any size you want, but 9-foot squares are the most common. If the backdrop is too large, you can cut it down to size before painting.
Mix one part gel medium with two parts acrylic paint in your roller pan. This mixture will cause the paint to adhere best to the muslin fabric. It will also dry matte so that there are no reflections on the background when illuminated with photographic lights.
Cover the muslin fabric with the paint on a paint roller to create a solid color background. This solid color can be used by itself or as a background color for the scene that you intend to paint. Wait for the fabric to dry before applying any more paint.
Add accents to your backdrop with additional paint applied to paint brushes, sponges, rollers, stencils or other creative media. If you are particularly artistic, you can paint an entire scene on the backdrop. All paint that you apply should be mixed first with gel medium.