Shading of my high school teacher

Hello everyone once again. I wanna show you all another proof of my talents. Here is a pencil art for my teacher who once used to teach me. She's always wished for a pencil art from one of her students so I decide to surprise her.
Here is the information for the work;
Surface: Cardboard
Size(cm): 32 by 31
Pencil: Charcoal pencil, HB, 2b, 6b
and 4b
Time: 48 hours

Well here are the progress shots

That's it. Successfully done and dusted.
Thank you and please upvote. God bless.