PostScript .... There was a request to explain how this was done. Watercolour paper folded over, leaves and tea bags placed inside the folded paper. The folded paper was then sandwiched between two pieces of ply board and clamped together with strong paper clip ( we call them 'bulldog' clips) and the whole sandwich was boiled in a pot of water for about an hour. I learnt this technique from Elizabeth Bunsen who is the master artist of this technique- we have just been playing.