I think they look great. However, the skulls around the cauldron look a bit more Metallica than WOZ. Just my opinion.

I'm in for the well and walls set once you do another run. However, if I could make 2 more serious suggestions for alterations, and 1 more vague possibility:

1) Use some high resolution 3D printed flames for the torches. Would be more obvious that it was a flame, would act as a diffuser, and you could hide a bigger, better 'flame' LED behind them.

2) Change the skull by the cauldron for an hourglass.

Also, no idea if such an LED array exists, but if one that could make a swirling (vortex) like pattern could be mounted under the cauldron, and then light when the witch is active, that would be awesome.

IMO a switch cover for the ramp should be integrated into a larger plastic. One that acts as an airball deflector for the ramp. No-one's made one yet, and there can be a bunch.

Per the suggestion, poppy field might be a good printed motif.

Found something that might work. 'Chase' pattern EL wire in a spiral.