Tarantula Hawk Elytra texture is 64x64 with the wing position being offset by (32, 32), which doesn't match vanilla's 64x32 and offset (22, 0), while having the same model dimensions. This causes issues with Elytra Trims since it reasonably assumes elytras to follow the existing format.
Since your format doesn't use the other part of the canvas and uses the same model dimensions, I ask you to move the texture (-10, -32) pixels up and remove the lower half of the canvas for mod compatibility.