Of course this is no real butterfly – just a fantasy butterfly. I did the drawing of it quite some time ago, and thought it would be nice to paint it. Instead of using my window as a kind of light box I used tracing paper. You first trace the drawing with a hard pencil, then you take the back of it and go over the lines with a very soft pencil. Then you turn it round again, put the tracing paper of your final support (I used watercolour paper) and go over the lines again, this time again with a hard pencil or a ballpoint pen. The lines you will get on the “real” paper will be very light and easy to erase; but they serve very well as orientation for painting.
I used two reds – crimson and vermilion; besides that black for the marks on the wings and sap green for the background.