ahaha thats really good dude. good skulls too id give em twelve darkjaks out of eight darkjaks.
not remotely lowpoly and probably unusable for games but if anyone wants to have a blast playing around with 3d stuff you should all check out
Sculptris. It's free and has zero learning curve and inbuilt paint program and is basically just a big virtual ball of clay for you to tinker with, its really good. heres a deformed head i was messing with (the weird left eye is because i slipped up with the grab tool and didnt notice til later :/)
EDIT: actually i think i saw someone say they imported their lowpoly models into sculptris just to use the paint program! i tried it but theres apparantly a restriction of four vertices per each polygon in the model so idk.