Well I htink it's wonderful- magical, perfect combination of texture and colour. Thranduil seems almost part of the treeroots/ cavern- whichever it is - and I love that sense of being asmongst teh roots of the forest.
Wow! I love the expressions you have for each character. It's so vivid and the color techniques sets the mood of a foreboding aspect especially of how melancholy Legolas is kneeling at his father's side. You feel sorry for Legolas who seems to have no choice but submit to his father, Thranduil's will regardless of how he might feel otherwise.