NOTE: despite the warning that it is "incompatible" or made for an older version of Minecraft, this resource pack should work for any version of the game. the versions listed are just the ones I have personally tested and used on.
I made this rescore pack because I couldn't find any Elytra texture packs that matched my Minecraft skin. I just sized down a galaxy image from Google to match the dimension of the elytra textures, edited the colors, added outlines, and spent an hour and a half attempting to get it to work properly (this video was very helpful), until I had this.
this is my first-ever texture pack so please let me know if there are any issues or bugs.