I thought I'd do a quick video just explaining a bit about tones and colours in white fur.
Please excuse my lock down nails - we're doing the garden up at the moment and it's taking a toll on my nails!
This doesn't go into all the colours you need, but just shows how white fur very rarely is white - and how it's quite daunting to draw white fur on white paper, and how our brains see white as white, so we reach for the white - and then end up with a drawing too pale.
But when we use the correct colours, our brains tell us it's too dark - so it's quite frustrating!
Anyway I hope this is useful :)