I'm currently creating a 128x128 head, and i'm trying to make it a lil creepy. I wanna add more since there isn't much, but I don't know what to add. Please and thank you for the help!

Just experimenting with textured skin can be effective with monsters. Wrinkles, rough skin, scales, wounds, scaras and so on.
Additional eyes are a common technique to achieve "creepyness" used by oriental artists.
Innocent features contrasting with the twisted are always a great tool.

You could also make a thread for your head in the art board if you would like to get better criticism and stuff.