[Help]Texture problem

[Blazer]

hi all. i'm working at a new armor. I'm trying to edit dynasty (l/r/h). but i have a problem. at dark elf is the biggest. as you can see in the images below it has some black edges where the wings should be. how can i remove those black edges? from distance it look very ugly. help me pls.

are marked with white

[Blazer]

does anyone know? i really need help