I see some comments that it should be smaller and it might be too big for screen space, maybe you could make it a bit more closer to the body, perhaps like how Vampires wrap their cloaks around their body, kinda like that.

Almost like the "Opulas Robe" Syandana, have it more wider almost engulfing the shoulders, and pretty much sticking to the back like a cloak and then when it expands use the Opulas Robe for reference as it sticks out at the back quite a lot, make the wings detach from the back and stand out, also cut down on the width and make it perhaps like angel wings, more longer, or like a cloak pretty much XD, so it doesn't stick out way too much from the player.

Just brought your Night Hunter skin for Nidus just now and was checking if there was a syandana for it as well, great work! would love to have this implemented.