Roughly a year ago I began attempting to draw robots, as all I can draw is people.
Here are my attempts at sketching transformers, all are done using a reference picture, as they are difficult to draw ^^
First up a Prowl sketch
Bumblebee and Cliffjumper......yeah I think I made Cliffjumber too big
The twins, this pic is a little haggered
A scene from All Hail Megatron
and here is Starscream...he is by far the hardest to draw
Feel free to post your own sketches in here if you'd like ^^