As an experiment I made a sketch with the oil pastels of my kids. It was fun to do but I found it very difficult to work in detail with those things. To compensate this problem (partial) I worked on a bigger scale (15x15 cm) that I'm used to.
I should think about taking a photo to. With scanning the orange looked brown. When I played a little with the colours to get the orange right, the black turned out to be rather brown
Hope you like it. All help about sketching with oil pastels is wellcome!
16/2/2010, 22.00 UT, CM 210°, alt: 62°, 12" dobson @ x300, apodizing mask