I painted this painting twice today. The first time, I didn't know how to achieve the highlights in the fur and ended up using Prismacolor colored pencil for the highlights and to add some more depth to the eye. I also used colored pencils to darken some areas and provide more detail. I decided to list this painting on ebay (see link on sidebar) and create another one using only watercolor paint.
The second painting was easier although I still had problems with the highlights. The only other problem I had was that the black really didn't sink into the paper and it was very easy to lift off. When I tried to darken some areas a lot of the color would lift off with just one brush stroke. I don't know if that is because of the paper or the paint. I use Aquamarine Blue + Burnt Sienna to make my black and I have never had an issue with it lifting so easily.
I really love cats and would like to improve my ability to paint the fur accurately so I will be doing a series of cats over the next few days.