I love her. very beautiful. May I give a suggestion on some things I have been learning?
Specifically, with lighting, I found out that using a spotlight directed at the character really helps bring out more detail in the subject, I use light geometry in a rectangle with render emitter turned off, the height and with can be any size but I tend to use 50 or 100. Also Luminous Flux I turn up to be around 1500000, but it can go even higher depending on the scene. Also I use Spectral Rendering Enable, as it makes the lighting even better.
That is my main light, then I use other lights to the side of the character sometimes depending on if the shadows are too dark.
Anyways, just some thoughts.
I absolutely love your character and composition. She is super HOT.