Here's some more....
I like drawing buildings, I have a whole slew of these if you want more
This is my original hunter-seeker robot. (he's a pretty nasty bugger, wouldn't want to run into him)
same robot, different pose.
This is a star wars capital ship. Copied it off of a book cover (cheater, I know!)
I like designing technology. This is a diagram of a cutaway of a humanoid robot's arm.
Explaining how the joints work on the robot arm
Have fun!