There are so many great watercolor and ink paintings of black cats online where the artist lets the flowing of the color define the shapes of the cat--they always amaze me! It looks like magic.
I don't know how they do it, but I thought I'd blunder in.
I identified the parts I had to keep lighter, then started flooding the colors in.
I think it'll take a lot of practice to find the right technique and to have the confidence to get it right on the first go, without having to keep going back and "adjusting"!