How the hooligan is this a drawing?! How is this a drawing?! It's not a drawing. It's a photo. I'm telling you now it's a photo. If you say it's a drawing I think I'll just pass out. Lol. Just joking about with you. But seriously, your drawing is amazing. Keep up the amazing work. God bless.
How to make hair? Hmm ... Everyone decides how to draw hair, I'm not a standard. I have not drawn the details, but to create a common view (like a hat). The sharp end of eraser do glare. Pencils 7B, 8B use for the darker areas (hair roots). There are good video tutorials (they can help you)