skunk drawing progress

I thought i'd post the small amount of progress ive made on my drawing of stevie the skunk thus far.I'm finding this drawing quite a challenge as a large part of it consists of a white tail and upper body and i'm having to layer graphite very gently with both pencil and blending stump to depict the small areas of darker hairs and to try and pick out the white tail hairs against the white of the paper.ive made extensive use of indenting here too when attempting to pick out individual white hairs against black background fur.all this makes for slow going but i'm hopeful it will work satisfactorily.i normally work on graphite pieces once the sun goes down as i find i can work in black and white using my daylight lamps but dont like using colour at night as it never feels quite right and so my oils are worked on only during daylight hours.