Here's some examples of the concept work I did for Robert Zemeckis's 
Beowulf.  I spent about two years working on this film and I learned quite a lot during the process.  If you want to see more concept art for 
Beowulf check out 
The Art of Beowulf.  There's a lot of great work in it from my friends at Iceblink Studios who did all of the concept art for the film.

Beowulf:  Final Portrait

Geats

Key Frames

Wulfgar: portrait,  Hrothgar:  final portrait

Wiglaf Portraits, young and old.

Wiglaf, Unferth:   final portraits

Unferth  portraits, young and old.

Unferth:  costutume design, portrait

Ursula, Grendel's Mom, Yrsa:  final portraits

Grendel's Mom:  foot design, character design, portrait

Grendel's Mom (mermaid form):  character design

Grendel's Mom: portraits

Grendel's Mom: keyframe

Wealthow/Grendel's Mom: transformation

Jester:  character / costume designs

Jester:  paint treatments

Grendel / Hrothgar's decapitated head

Beowulf's Son 

Dragon transformation a and b

Dragon  c

Hondshew tattoo studies

Breka:  final design