How did you go about graying the muzzle? Eyebrows can be where ever you want them to be.

Since I don't have an airbrush I did what's called "dry brushing". Dip the brush in white paint and then "squeeze" (against the paint can rim) out most of the paint until barely any on the brush but just enough to dab the fur. Then when the paint drys, brush with the cat wire brush thing (whatever it's called), and there you have it! Also dab the roots of the whiskers black as well as extra black spots.

Thanks for asking, I should have noted the techniques & materials used.