I like how you've given him maturity and age in his stance without making him /look/ old. Of course he's almost a baby by elf standards, but many still make him too youthful in concept, forgetting to humans he'd be quite aged.
Ahhhhh... As much as I love Orlando Bloom as Legolas, I LOVE it when people come up with their own boss interpretations! Marvelous depiction, and as for the artwork itself...! Love the lighting, love the outfit. Overall, beautifully done.