| Year | Status | Category | Artwork |
| 2013 | Nominee | Best Interior Illustration | Tarzan of the Apes, by Edgar Rice Burroughs |
| 2013 | Nominee | Best Cover Illustration - Magazine | Famous Masters of Filmland #262 |
| 2013 | Nominee | Best Cover Illustration - Hardcover | Gods of Opar, by Philip José Farmer & Christopher Paul Carey |
| 2011 | Nominee | Best Product Illustration | Dragon's Domain: The Ultimate Dragon Painting Workshop |
| 2010 | Nominee | Best Cover Illustration - Magazine |
| 2010 | Nominee | Best Cover Illustration - Hardcover | Dragon's Ring |
| 2009 | Nominee | Best Cover Illustration - Magazine |
| 2008 | Nominee | Cover Illustration, Hardcover | The Taint and Other Novellas |
| 2008 | Nominee | Cover Illustration, Magazine | Analog, October 2007 |
| 2008 | Nominee | Color Work, Unpublished | Cthulthu's Domain |
| 2006 | Nominee | Cover Illustration, Hardcover | The House of Cthulhu |
| 2006 | Nominee | Cover Illustration, Magazine | Analog, July/August 2005 |
| 2004 | Winner | Best Cover Illustrations - Magazine | Fantasy and Science Fiction, July 2003 |
| 2003 | Nominee | Best Interior Illustration | Dragonhenge |
| 2003 | Nominee | Best Cover Illustration: Hardback Book | Resurgence |
| 2002 | Nominee | Best Cover Illustration: Magazine | Analog, July/August '01 |
| 2002 | Nominee | Best Cover Illustration: Paperback Book | Forge of the Elders |
| 2002 | Nominee | Best Cover Illustration: Hardback Book | The Dragon Society |
| 2001 | Nominee | Best Cover Illustration: Magazine | Sue (Chicon 2000 Program) |
| 2001 | Nominee | Best Cover Illustration: Hardback Book | Darkness Descending |
| 2000 | Nominee | Best Cover Illustration: Hardback Book | Dragon and Phoenix |
| 2000 | Nominee | Best Monochrome Work: Unpublished | Dragonhenge |
| 2000 | Nominee | Best Color Work: Unpublished | Dragonstorm |
| 2000 | Winner | Best Cover Illustration: Magazine | Fantasy and Science Fiction Magazine, August 1999 |
| 2000 | Nominee | Best Cover Illustration: Hardback Book | Rainbow Mars |
| 1999 | Nominee | Best Color Work: Unpublished | Rage & Despair |
| 1999 | Nominee | Best Cover Illustration: Hardback Book | The Last Dragon Lorg |
| 1999 | Nominee | Best Interior Illustration | The Book of Sea Monsters |
| 1999 | Winner | Award for Artistic Achievement | - |
| 1999 | Winner | Best Cover Illustration: Magazine | The Magazine of Fantasy and Science Fiction |
| 1998 | Nominee | Best Cover Illustration: Magazine | Analog, October 97 |
| 1998 | Winner | Best Cover Illustration: Hardback Book | The Howling Stones |
| 1997 | Winner | Best Cover Illustration: Magazine | Fantasy and Science Fiction, May 1996 |
| 1996 | Nominee | Best Cover Illustration: Hardback Book | Cthulhu 2000 |
| 1996 | Winner | Best Cover Illustration: Magazine | Analog, Jan 1995 |
| 1996 | Nominee | Best Cover Illustration: Magazine | Marion Zimmer Bradley's Fantasy Magazine, Summer 1995 |
| 1996 | Nominee | Best Interior Illustration | Hero (Asimov's, Jan. 1995) |
| 1996 | Nominee | Award for Artistic Achievement | - |
| 1995 | Winner (tie) | Best Cover Illustration: Magazine | Asimov's, Aug. 1994 |
| 1994 | Winner | Best Cover Illustration: Paperback Book | Dragans |
| 1994 | Nominee | Best Color Work: Unpublished | Orcaurora |
| 1993 | Nominee | Best Cover Illustration: Magazine | Weird Tales, Summer 1992 |
| 1991 | Nominee | Best Cover Illustration: Hardback Book | Queen of Angels |
| 1991 | Winner | Best Cover Illustration: Magazine | Aboriginal SF, Jan 1990 |
| 1990 | Nominee | Best Cover Illustration: Magazine | Amazing Stories, Mar 1989 |
| 1989 | Nominee | Best Cover Illustration: Paperback Book | Necroscope |
| 1989 | Winner | Best Cover Illustration: Magazine | Asimov's, Jul 1988 |
| 1989 | Nominee | Best Cover Illustration: Magazine | Amazing Stories, Sep 1988 |
| 1988 | Nominee | Best Cover Illustration: Paperback Book | The Manse |
| 1987 | Winner | Best Cover Illustration: Magazine | Asimov's, Jan 1987 |
| 1985 | Nominee | Award for Artistic Achievement | - |