Early zbrush models over winter break

I did these when i first got zbrush over winter break
i used mostly the clay tubes, standard, and hard surface brushesSkull from a tutorial that came with zbrush r3
Older man, no reference pictures except for the ear

Leech from my head, no referance sketches, first time using textures at hd geometry mode, some hard surface modeling as well
Leech head, hard surface modeling and spike tool, Lot of fun
Alien from my sketch book
alien front view

Skull made from tutorial i did with facial muscles using zsketch function