Mega the Gecko Dragon rough design

I'm working on designing a new sona form for myself that fits more into the based-on-a-real-animal type area. this one is based off of a leopard gecko. I always loved their adorable fat tails but the markings were kind of hard to do...I think they look ok. Now I just need your guys' help in deciding if I should add hair or a 'sail' (head fin) or just leave it the way it is. The paws also are a mix of leopard gecko and normal gecko as well so...Sticky paw-pads! Yay! *shot*