It's just how it is in the artwork, I can't change the emblem, I don't have skill to make it look natural, changing the color is more likely, but I'll be honest, I don't want to do it, I'm working on another wallpaper right now and for me this is finished piece, sorry for disappointing you.

the character itself is beautiful. The only thing that I would consider changing is either the color of the armor to blue (to match the alliance color of the Covenant) or to change the symbol to the Ebonheart Dragon head (since their alliance color is red). I played this game a lot hahah. The Ebonheart makes more sense since he is a Dunmer.