The pair are collaborating on an untitled graphic novel, Doran has revealed while discussing her pencilling technique on her blog.
The artist previously worked with Gaiman on his legendary series The Sandman.
"My pencil technique is exactly the opposite of what they teach now in art school," Doran wrote. "I do not use the side of the pencil, or graphite. I use the sharp tip of the pencil, and build up everything from hundreds of strokes. This is the way old masters drew back in the day with silverpoint.
"It's a look I love, but almost no one does it because it is so laborious. The popular prejudice is for the 1950-ish commercial art drawing style. I like that, but it's not what I want to do myself.
"I am using this technique on the new Neil Gaiman graphic novel I am doing for Dark Horse. You can imagine how happy I am to be doing this project! The drawings will then be coloured with thin washes of watercolor, digitally, or both."
The project is believed to be an adaptation of a Gaiman short story.
DC Comics recently announced a new Sandman miniseries from Gaiman and artist JH Williams III.