This one is simply a copy of the photograph, with more red in it.
I've been experimenting with the colours and textures. The Schmincke ruby red will be perfect I think. And I'll use a pointy stick to do the veins in the petals. And I can lift colour from the green areas to create the fuzzy background. I'll have to think of the highlights next. The ruby red I have doesn't lift too easily, so I'll have to move quickly before the paint dries.