Had another go and still failed. Here's the process, for those interested in such things.
Raw file captured at f/3.5 on a full-frame body with a 16-35 mm ultra wide-angle lens. I thought I'd take Jay's advice and try a blur. This rarely works as well in post-processing as it does with the "natural" bokeh of a good, fast lens. Mine is an f/2.8, but vignetting is a problem wide open. Anyway, the first image is what came out of the camera.
OK, the second image is the crop with geometric corrections. This is my polite way of saying I can't compose an image to save my life. Happily, Photoshop can correct along the vertical and horizontal axes.
The third image is where it starts going horribly wrong and I can't seem to pull my head out of my arse, just like last time. The picture to me says "black and white", but the highlights go off. I lose the statue focus (tried with a selective focus plug-in) and, well, sod it: radioactive greenery, manky focus, complicated composition and blown-out highlights.