Mudbox - Home Practice, First Head Attempt.

I've started playing with Mudbox on my home desktop in an attempt to increase my ability with the software, so I thought i'd start with a human head bust.

(I have included the original pre-made template for comparison)

What I have learned from this exercise is that Eyes and Lips are very difficult, I wasn't too happy with either on this model but didn't want to play around with it forever, I will ask Simon for advice in the future.

any feedback and advice would be appreciated! :)