Do you want something like this?
Yes it looks like that because villager has no neck, i hope it isn't too noticeable in game.it looks like the villager head is kinda floating.
I tried that, but during the decay animation, the head would stay floating in the air. I'm still a newbie at this, so feel free to do it better.you could also maybe just use the head as an attachment to a headless footman model