Anything with the Transformers = a Win in my book.

Starscream says "finish me! I'll get that optimus prime and his puny autobots yet!"

Hmm... the lineart's great, but the shading's a bit confusing. It seems like for the arms the light source is to the right, and for his shoulder things it's to the left. Maybe having a background to establish a context might help, or using a reference of different robot art just to get a sense of how to use light and texture. Transformers can be pretty tough to work with, though, on account of their bright colors.

7 hours? Where do you see that? Try 52 minutes and the lines probably took 5 minutes. The truth is I spent all this time working on this head and it still looked boring so I made it dark red and put the grid over it. I've done a lot of grid work and it's pretty easy for me at this point.

He was probably confusing when it was posted with how long you spent on it...

*stands next to all the other gawkers*