Drawing hair in AR is not so easy.

[cinematik]

I tried oil painting long, curly female hair and it didn't turn out very well. I get something too blurred or too angular. I don't try to do every hair, it's not about that, but in freehand oil painting it's not so easy. I use mainly two tools in AR - a basic brush and a flat pallette knife. How do I draw this correctly?
This is a question about hair painting technique, not how to paint in general.