Here’s a commission I finished recently.
Lots of fur! The trick with hair and fur, if you don’t want to drive yourself mad, is to set the general depth of shade with pencil marks perpendicular to the direction of the hairs. Throw in some random lines and then draw in enough of the fur to create the illusion of having drawn it all. The interplay of these cross-hatched lines gives the fur a sense of movement and vivacity. You can then pick out particular areas, even particular hairs, to draw in more detail. Don’t be afraid to lighten areas with an eraser so you can draw in a lighter piece of fur or hair. Some people say you should never rub anything out but that seems like making a rod for your own back. However, paper never shines as brilliantly once it’s had pencil on it, no matter how good your eraser is, so be careful not to touch areas you want to become your brightest highlights.