I have been rendering for over 15 years and still trying to improve. When I started to 15 years ago my render were not the greatest. One small step at a time. Keep rendering and look at tutorials in order to grow. The main thing about rendering is the lighting and what system you are using to light the scene. Cool render.
Getting bettre belias. things to watch for... her dress makes it look like she's about to sit. left leg shouldn't be bent as much, expressions always make the portrait. a bit of a squint shows determination. lighting is great and the rest as well... Good overall thanx