Design for equiped elytra by:
zimraa
https://imgur.com/t/elytra/lROFn

Design for elytra item by:
ATOMICtheCrow
https://www.planetminecraft.com/texture-pack/elytra-to-crow-wings-optifine-optional/

Recoloring by:
Hikaru_Mitena
https://linktr.ee/hikaru_mitena