Real nice Araval, I like it a lot!
Have some constructive reflections, though I'm not an artist so take from it what you agree upon ^^
First off, and that's always a challenge when working with different sources hehe, is shades. Trying to align different elements more would improve the overall impression, thinking of the good guys. Slightly darker and/or more contrast for Gil-galad for example. Possibly including the bottom warriors, lower their red tone somewhat. The landscapes and "evil elements" looks good, mind you.
The are two harder "cuts" I noted. Closest Elven warrior's sword ends abruptly; this is ofc from the source material, but perhaps something can be done to make it melt into the background more, like more transperency? The second case is Galadriel's lower side, it looks quite straight (perhaps making her bottom right corner [her perspective] slighly more transparent would solve that?).
Lastly I would either move Elrond backward somewhat in order to not get Celeborn's hair over his line. Or if keeping him in place, then I'd put him over Celeborn's hair (yet still behind Elendil, ofc).
Keep up the good job