Hello
My name is Javad, I see your project and understand that you need realistic character
I'm a digital sculpture in Zbrush working in Yatuk game company for about 3 years
I create low and high poly characters for the game
I will give you the head in any format that you need (obj, fbx, ma, stl,...)
to create this type of modeling we need more picture (side view and perspective)
you can see some of my modelings in my portfolio
https://www.freelancer.com/u/baymax3dart?w=f
Thank you for your consideration and look forward to speaking with you
best regard
Javad