You are so good at making hair! Thank you for sharing so many resources on this, it can be really hard to find details on how people make good hair, at least from my experience
I tried to use a texture to create a dyed pattern in the hair but I couldn't find a way to get decent resolution - even trying a mask instead of a whole texture. So I got some advice and ended up just creating the hearts as their own description and went on to try a leopard dye pattern I'd seen online. These are still just…