Glue panels (and bottom) using super glue. Coat with lacquer sanding sealer, light sand, spray primer, and paint.
Cut panels (4 side) to fit inside lamp. Glue with IPS weld on #3 or you can use super glue as well.
I used a led light for mine but you could use a candle if you prefer. (I think) Haven’t tested with candle. Don’t know if it would melt acrylic panels after time.