Nice design and fits without issues.
Just a suggestion, maybe it would be possible to add some kind of grov in the back side to have Velcro tape so no need to drill the wall and just use the Velcro tape instead
Really beautiful model. the tolerances between the inter and outer shell are perfectly tight. My wife is very excited to hang these in the living room.
Printed the large ones at 160% and printed on two plates. everything printed flawlessly.