At first I thought it was an oil painting Ulrike, but looking closer I can see the soft marks of a pastel work. Are you able to get the same colours in pastel as in the oils as the colours look very similar to your oil painting. Which colours are you using?
I think I can get the same colours in pastel I use in oils. Is that so unusual? Hm, I've got different kinds of pastels, from Sennelier via Rembrandt to Faber and Schmincke. However, I mix them a lot O;-)