Step 1 Ballpoint pen. Step 2 Photoshop. Step 3 Filter/Pixelate/Halftone I saw this around the Internet and decided to try it. Not much of a step by step, just did it for fun.
I did this drawing for my daughter who, as you can see in some of my drawings likes to collaborate sometimes, kind of a mix from that "monsters" movie and Rat Fink. Ballpoint pen and photoshop.