I've tried the hack from MATY, but it doesn't work in my game. I've checked for conflicts but can't find any. Is there another hack around for making the paintings you make on the easel shiftable? Edited to add that I am using the Fractured Moonlight custom easel paintings which may be why the MATY hack isn't working on them. Thanks.

Chris Hatch also created a mod for shifting easel paintings.
CJH_PaintedCanvasHeightAdjustable(AL). https://simfileshare.net/download/5028842/

I don't know if it will work with custom easels, however.

Unfortunately, this one doesn't work either. I'll just have to live with them being too low on the walls. Thanks for trying.

Custom easel paintings are completely different objects from the EA ones, if you want to modify them, you have to modify the CC package itself or ask the original creator to. I don't know if there's a tutorial out there somewhere for how to make things shiftable, but I can't imagine it would be that complicated.

Edit: I found this: https://hugelunatic.com/making-objects-shiftable-in-al/ It looks like you just have to set one of the placement flags in the init, but it won't work if the shadows were made a certain way.