This is a series of illustrations of a can opener. 

The first illustration is in an iconographic style. I made the can opener out of the most basic shapes and tried to represent it in the simplest form possible. 

The second illustration is a more organic style. I used varying stroke weights and effects to give the illustration a hand-drawn feeling. 

The third one is in a geometric style. I used shapes to create a polygonal look, reminiscent of retro video games. 

The fourth one is done in the style of a gesture drawing. I used curved lines that repeated to resemble lines from a pencil.