I had a 4th of July wall hanging 2'x3' with led lights to go behind it. What I did....
-Ironed fusible batting to front panel.
-quilt top as desired (just panel top and fusible batting)
-Figured out where "pocket" for light control would go and where to place lights on panel and "marked the spot."
-numbered the marked spots in the order the lights would be placed so I didn't have to figure out that again.
-set lights aside and using the "eyelet" stitch on sewing machine sewed an eyelet where each light would go and poked a starter hole inside each eyelet.
-make small pocket on backside of front panel for "controller". Don't make flat. Make bowed so when controller is inserted front will still lie flat
-make the back like a "pillow back" with two panels overlapping about 4-6"
-make your hanging sleeve
-right side of panel Front face up, then place hangin sleeve, then then right side of "back two panels" face down.
-stitch around all four sides and turn inside out, iron.
-insert led light string into eyelet holes and controller into pocket.
Done!