Your a brilliant artist Rafael, I really like all your art but this is probably the best 3D sculpted female head I’ve ever seen, looks great in greyscale and those eyes without the pupils are kinda scary but very appealing. Beautiful piece of art. Very inspiring.
This is great to say the least. 
Very good and impresive works!
AMAZING Work!
Dont you have tutorial about your Portrait 
i love to study about
Unbelievably cool!