Lithophane / Photo Frame (standing or hung on wall)

Update:
Changed a few things at the back of the frame itself.

As a continuation of my previous frame (https://www.thingiverse.com/thing:4592870), I decided to make it work both as a photo frame as well as a lithophane frame/casing. The lithophane frame is designed to work with the LED candles, similar to this one: https://www.amazon.ca/gp/product/B0064RFHHO/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

This works both for hanging on the wall or as a desk photo/lithophane. If you just want to use it as a photo frame hung on the wall, disregard the casing/mount that gets screwed in at the back of the frame. If you want the photo on a desk or lithophane either on the desk or on the wall, you will need the back piece.

4 pieces to print:

• Frame - 20% infill, print with support, set Support X/Y Distance to 2 for the holes, at least that's my thought right now until I get to print it myself.
• Back piece (mount/casing) - support everywhere with support everywhere set Support X/Y Distance to 2, 20% infill. I strongly suggest pasting aluminum foil in the inside of the "cup" part of the mount to further reflect the light.
• Hook: No support, 20% infill
• Background (for pictures): 20% infill, no support
  Note: I added individual pieces that can be screwed in for the mount, for easier printing (no support)

Other items you will need.
4x M4 screws 1cm in length (added a screw.stl as well, but maybe just buy them at a hardware store)
1x LED Candle (these are the ones I ordered: https://www.amazon.ca/gp/product/B0064RFHHO/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1) for lithophane

As a side note, generate your lithophane (for this frame) on a square picture that turns into a 12x12cm with added 29mmm border on each sides. This site does it: http://3dp.rocks/lithophane/