User blog comment:CullenStantonRutherford/Artwork showing Blog!/@comment-27077671-20170211115316/@comment-28389951-20170211115445

To be Honest; It takes a lot of practice XD

I have to judge where said light source [Like Sun, or a desk light] would shine of said person, then what is facing -away- from said light source. It took a lot to figure all those things.