First I started to outline the butterfly with a pencil. (This is actually another butterfly, I forgot to take a pic of the other one.)
Next step is the first layer. I've used acrylics.
Here I've applied the first layer of oil of the background.
For the details I've used a very thin brush.
Here I've applied oil on the butterfly too. In total I've applied 1 layer of acrylics and 1,5 layers of oil. What I mean by that is that it wasn't necessary to cover the whole painting in oil two times. I just needed to make some alterations, color adjustments, highlights and shadows at certain places.
Now I'm off to my Spanish lessons. Happy painting everyone! :)