The Art of Stu Shepherd Website is Under Construction. Currently the best way to acquire Stu Shepherd artwork is via his site on Fine Art America:
Stu is an Aviation, Scifi and Fantasy Artist who also works in Games and Illustration. This site presents his images that are available as limited edition prints as well as a portfolio and many of his pieces created for Model Kit Box Art.
While the page is under construction here are quick links to art by category: