This time around, I retopoed my character with less density, as last time I made the mistake of doing my retopoly to dense. As usual it takes time and I spent a good amount of time trying to get my retopoly right which lead to easier detail transfer in Mudbox and easier texturing/colouring/painting. Reference images were key to making sure I was taking the right direction with my retopolgy.
Alien Character Retopo 
Alien Head Retopo
Unwrap wasn’t to difficult, I cut, separated and unfolded the arms, legs, hands, feet and head. Cutting the arms were not as easy as the other body parts. The retopology wasn’t perfect resulting in a weird cut. Below is an image of my retopo and UV Unwrap:
My UV unwrap and Retopology
It is a crucial step in the production pipeline.
Blake's Blog 