A mounted frame for round Hueforge works. Glue the Picture down to the open side of the frame with the picture hook at the top.

The default size is 205mm, as that's the size of the image I was mounting. If you need a different size, just change the X and Y parameters in the slicer.

The image I mounted is not my design, but if you are interested, it is located here: https://makerworld.com/en/models/141626#profileId-154251