So my wife is designing our bedroom and wants a pelmet covering the top of the curtains. It is basically flat but then she wants an ornate top and th en the whole lot painted. To keep the weight of the whole thing down (it i s about 2.4m long) I was thinking of getting 6mm ply/ MDF for the front, si des and top and then use some say 1"x1" battens in the corners to screw the ply to and essentially make a bottomless/ backless box then fix the ornate beading to it. Looking online, looks like all the ones I could fine use 1 8mm MDF and just screw them together (e.g. the front board screwed directly into the edge of the sides).
TBH the other technique seems a lot easier/ quicker but wanted to solicit f eedback here. Maybe there is a better approach?