Good start. One thing on the thumb, don't forget to rotate slightly away from the other fingers. Assuming you're not a double-amputee, you should have some ready reference to look at for placement of the thumbs.
Something else struck me as odd... I would think that with all that body armor, that the model would have gloves/gauntlets on. That would let you drop out the fingernails.
Look forward to seeing it textured and rigged. Keep up the good work.
AIM: mhcannonDMC
"If you love your job, you'll never work another day in your life."