I purchased some black sketch paper and a new white Derwent pastel pencil at the weekend, in order to explore art in an inverse way.
I drew the obvious... a horse of course... I have to admit this particular one drove me crazy mainly because I used many references in order to achieve what I wanted, and because I wasn't copying 100% the idea of the photo I found it slightly more challenging! But I think I managed to pull it off somewhat.
The good news is that I can now offer my services on black paper when I do future portraits!