>>1020104
You might want to make the head wider towards the top, starting around the zygomatic process. The head's width at the top of the muzzle shape, at the cheeks, can be as little as two thirds of the width at the cranium. Your model has pretty much constant head width from where the head is obscured by the hair.
A wider cranium will provide for a sloped contour at a 3/4 view angle while requiring less protrusion by the cheeks themselves, allowing the chin to remain relatively small. >>1019484 has a pretty good cranium to chin ratio without hair covering it.
Also here's a redline of how I think the head is structured in the reference drawing. It could of course be completely fictional.