The hair look good with the final lighting
If I may give you one last advice, this one about character presentation to boost even further the "wohw effect".
Add a subtle ground so your character has a stronger presence into your scene (unless it flies). Some character artists just add shadows, simple and efficient, like the Elf artwork from Vahid Ahmadi for instance.
And if you have time, you can even add a few details about the surrounding environment (very subtle) for more story telling and context, like the artwork "Wild West Challenge - Native American" from Nikita Svechnikov.