This is what I copied, but I think the hair and light and shadow are difficult to draw. What should I do?

https://redd.it/1o9ratc
@rdrawing

My drawing progress from age 6 to 34
https://redd.it/1o9tlli
@rdrawing

Portrait of my sister
https://redd.it/1o9u6ag
@rdrawing

A zombie with a little color

https://redd.it/1o9ug4h
@rdrawing

traveling with birds, swipe for reference

https://redd.it/1o9xa8h
@rdrawing

This is my first painting after learning basic perspective
https://redd.it/1o9ydlr
@rdrawing

Tears in Rain
https://redd.it/1o9w739
@rdrawing

I Will Draw Whatever The Most Upvoted Image Is
https://redd.it/1oa1eff
@rdrawing

My charcoal practice

https://redd.it/1oa31fi
@rdrawing

Lumographs
https://redd.it/1oa371o
@rdrawing

I'm doing manga for the first time but the result doesn't satisfy me. I'm using GIMP and I'm not so good on Digital. Struggling to find cool brushes too. What should I do?

https://redd.it/1o9z4qe
@rdrawing

Lobster
https://redd.it/1oaaqg1
@rdrawing