This is a scifi style picture frame that I designed to frame this drawing I liked. I printed the pieces out in as big a scale as my cr10 could handle (195%, 2 corners at a time) and superglued them to a 16x20 sheet of glass.
I used 0% infill and they came out okay, but I would recommend using 10-20% to make sure you the top portion prints right.
Total print time was about 15 hours for all 4 corners.
Each piece is separate, so you can arrange them however you like. There are 17 pieces total (each corner consists of 3-6 pieces)

I may make a revision later that allows for LEDs.

Edit (12/25/18): I added files for each corner as 1 piece with segments connected, as well as a file for the entire frame as 1 piece with all 4 corners connect.