Daily Illustration: Robots - Week 1 / Day 1

I'm starting of week 2 of my personal challenge with Robots! This particular illustration is for a project at work. I'm modeling the style after a set that my coworker Justin Harrell started for the same project. http://dribbble.com/shots/1466234-Robot-Parts?list=show

Tonight's lesson: Simple is not easy. Creating icons from the most basic of lines, shapes and planes with just a few colors can be quite challenging.