Here is some character design prototype of NarTaneen.

Her dragon form here, and was debating in if a regular nordic dragon or a more pterosaurus-like would look better, at the end the bat-like one win. Also added more changes, I keep the horns but change the ears colors, like more of a red-orange tone and added some touch of black here and there. At the end I opted for a more simple desing, with a simple light colored tummy and some simple random stripes and I think is more efective than a more complex one.

Still not the final desing but I think it look kinda cool at the moment.