The different shades of red and the grasping claws give a great sense of menace to the picture. Putting the reds into a stained glass window gives a certain religious implication, like this figure is a sort of Anti-Christ perverting a typically holy symbol. The sharp angles to everything likewise fit the stained glass aesthetic, as well as highlight the aforementioned menace.

Only things I would critique are the pot and the borders of the red window. There are a few spots where the darker coloring doesn't seem quite on point. It's trying to replicate the stained glass format of slight incongruencies, but often comes across as overdone rather than natural like the shades of red.

I like the stained glass effect here, both in the window and on the hand. Is that a pot or a baptismal fount? I will rank this in my upper tier, thanks for creating it!

This is amazing. Really good stylized stained glass look. Only downside is that it looks a bit like a hand coming out of a flower pot. But the composition remains very strong.

In which zombies. Don't buy them for your kids on Christmas.

Stained glass windows are usually more happy and cheerful than that, so to have such a window portend doom (thanks to the zombie hand) is a nice subversion. If I may be technical, the lines seem a bit too uneven at times to look like a proper stained glass window, but maybe that's what you were going for—a sense of unease.