hey there i think you are on a good way! =) and dont worry about the geo. first things first i would recommend you putting a skull below your model and use transparency to adjust the skull shape. the shape itself looks kinda of, especially on the back of the head. for a female the jawline seems too dominant. try to make it…
JD_Sculpts said it quite well. The biggest things I notice straight away is how shallow the back of the skull is and also the position of the ears. My rule of thumb is try to have the jawline running into the bottom of the ear, so just try knock them back about an inch :) Other than that it's looking great, good job