do you think the skull should glow or is that getting overdone?

This is pretty cool. Sub it.

its fine the way it is :)

Definitely no glow. Its symmetrical except for one little thing on the bottom left. Either you should make it totally symmetrical or add some more small variations to it to balance it. A different color would also help (maybe a light on dark?) Its good tho

Nice. And you only had to draw half of it!