a Unit 350?

This is my most recent drawing, had a lot of fun but it took me awhile to do. i was trying to come up with a robot just to see if i can actually do one.

How i work is pretty simple first a simple marker sketch than an overlay piece of paper on top and the fun begins. i use graphic pencils my favourites are 2b, 3b and b. i render as i draw but i make sure my pencil strokes are same direction, i also think about basic shapes and tones its just my personal way of cleanness.