>>96301002
They aren't bad, just a bit plain. They get the job done.

I think there are two small issues holding them back. Firstly, they could use some other stuff around them to make a bit of a scene. A skull, a rat, an offering bowl, maybe even just a tuft or two and some little rocks. You don't want just a thing, you want a little scene.

Secondly, they are a bit plain. You could tie a rope around one like it's a place of worship or there's something magically sealed inside, add some chains like sometimes people are chained to them, add some blood like somebody got killed on one.

What you've got is totally serviceable, but if you want them to be full on cool you gotta add the little touches that imply a story or create an emotion