This is a head-base that can be used to build a puppet-, plushie-, robot- or a fursuit-head (costume). I did not add ventilation holes as I expect most people will not cover the surface with fabric or felt.
I got some inspiration for the character design from the old animated TV-show Capitol Critters (look up Moze - he's supposed to be a cockroach).
The model is scaled for costume size (it's sized for normal sized heads - too big for me - I have a small head) - rescale it if you need to.
I do not recommend using the antennas for a costume. I only included them as a template for cutting foam. Having rigid protruding parts on a costume is not a good idea.