Hey guys it's Urkel here. I was wondering if there is anything that has a tutorial of pixel art, like this=

bottom line: black(x20)
1st line: Black 5 green 10 black 5
etc...


If theres not it's okay, I really wanna do a portrait of a famous person but I cant see a picture that has it close enough so I can count the pixels. I pixelated a picture of Marilyn Monroe but there was too many pixels and I lost count. :D So if any of you pixel people can help me, THANKS!
~Urkel