Okay! This turned out terribly, but I'm still gonna post it!

Step One: sketch out a basic face shape and hair (I used printer paper and a cheap mechanical pencil cuz I'm broke)

Step Two: ink it and erase your lines (I used a Faber-Castell F black artist pen that I found in my dad's desk)

I'm going to be using PB-69, PB-88, and PB-65 for the hair

Step Three: using PB-69, color in all your hair as a base coat (it's supposed to look awful)

Step Four: still using PB-69, put a layer on top of your base coat

Step Five: still using PB-69, put in some shadows and darken the roots with quick strokes (starting from the edges)

Step Six: after that, get PB-65 and darken the roots and shadows, making the strokes longer to somewhat color the entire hair (I MESSED UP DANGIT)

Step Seven: then, take PB-88 and make the roots and shadows even darker while also somewhat coloring in the entire hair (make sure to leave some of the previous colors showing through)

Step Eight: add darker strands here and there before adding details! (I SCREWED UP SO BAD WHYYYYYYYYY)

MISTAKES:

WORST MISTAKE ^^^

Anyways, I hope that helped! (It probably didn't this was awful)

(Also if one of you know how to correctly color hair using Prismacolor markers please message me bc I have no idea XD)