I used Photoshop CS6

I traced the lines and shaded it myself

Source as requested by lmod https://s-media-cache-ak0.pinimg.com...12c05a9f4a.png

thanks for the comments guys,

dengue: what do you mean by "value transistions"?

veoo: its the lead singer of guns n roses, a famous rock band, and i do art for fun, but i dont think drawing my own lines is fun xD