Gather these parts
Glue hook rails into the sides of the back plate so that the hooks are pointing down
Glue the detail plate on top of the backer as shown. The bottom of the detail plate should line up with the top and bottom of the plate
Glue handles into the slots at the bottom of the roll-up door
Glue the door frame on top of the door with the bottom lines up with the bottom of the previous assembly as shown
Glue light fixture center into the slot above the door
Glue light fixture ring around the light center
Prime with Rust-o-leum Profesional Enamel flat black and paint as normal with hobby paints.