So I've drawn this wooly bull but I'm so so bad at shading and adding low and high lights to the hair... Could anyone give me some tips or a good tutorial? I've been struggling with this for ages...

There are some shading guides I really like on DA, I can link to them :D

Sai Shading Awesome In-Depth Tutorial Simple Anime Style Shading

Thank you! ♥

Anytime! I've been practicing this myself lately. I'd love to see if anyone else posts any tips here!