I want to believe.
edited to add credit :: Lady Crappo
Thanks so much, both of you! I found this on Tumblr and didn’t have the details.
I just spoke with the artist, and it looks like she’ll be doing a tutorial for this as well! You can probably find it soon on her tumblr http://ladycrappo.com/post/93141462091/i-want-to-believe
This was posted without credit.
http://ladycrappo.com/ <- source for you