Thanks to those who let me know about which photos you liked best! In the end I went for combining three of them : the ferns and the two stream photos. I think I'm probably going to do another with the blackthorn flowers (and a darker background for those) and maybe also the daffodils, perhaps with a hint of the path from the bluebell pic behind them. I bought a six-pack of these tiny canvases, so continuing the theme makes sense.
Because this is such a little painting, I photographed it with my painting jamjar, for scale.