brushstrokes, especially on that horse in the foreground. the hair looks real ratty, i dig it.

well, the nazgul is great and the robe looks incredibly old and misterious as it should be. also the horse (or the nightmare?) is cool and the one in the foreground is "sick" which is the best word to explain those creatures that nazgùl ride on.
just a single negative point, the sword is too big (heavy greatsword?) and doesn't seem in place (even a nazgùl can't manage to use a two-handed sword with a single hand on a horse i think)
briefly, it's cool...