How do I edit white hair???

I'm really bad at drawing so I normally just follow tutorials bit they mostly only use darker colors and it throws me of cus the base color of white haired oc is already the lightest color you can choose 😭 please help I've seen so many super talented lovelies and I wanna be just like them but it's so difficult. I don't wanna talk abt the eyes- I messed up on one of the eyes and only realized when I was almost done so I went "F♡ck it" and moved on

(Old oc i made cus i was borde she's)