Hello! Wow I love your artwork, you are pretty advanced when it comes to rendering and human anatomy. Your detail is also lovely, especially in the clothing and scales here. I am prone to paint pretty girls myself, they are hard to escape!
I hope you don't mind some feedback, or rather just an observation. There is a certain quality about your faces, it's hard to put a finger on. It might be proportion, or perhaps the rendering, but you have a similar look as my own girls... not quite realistic yet. I think you are more advanced than I am though, for sure.
That being said, I would love to try and improve on faces, and attempt to find that elusive key to truly realistic people. Is it lighting? Proportion? Color? Are you working on this mystery right now perhaps?