I found that the easiest way to photograph quilt tops is after you made the quilt sandwich. The fabric sticks nicely on cotton batting, keeping the quilt top perfect and flat.
This top is already quilted and washed, tomorrow I will add the binding!
For my new sewing studio I plan to make a portable design wall, covered with cotton batting or maybe flannel. While I rarely need it effectively for design, I think it is of great help for photography.
I searched on Pinterest, here are a few ideas, in case you are interested in making one for yourself.
Great tip to clean your design wall
Maybe a lint roller would work the same??