I love this piece and your rendering is looking great! But it seems that you have been working on this piece for a while, and as you want to find your style, I'd suggest you to just do some more scribbles and try to just play around with anatomy, faces etc. It's great if you want this piece as a reference for your style, but I would always suggest you to try multiple things to settle for the stuff you really like and really dislike regarding your taste. Just some advice, you obviously have a lot of skill already, so don't put so much pressure on your style having to be perefect on the getgo!