I tried the apple and watermelon radish with feta and walnut salad for lunch today. I used one large watermelon radish instead of two medium ones, but otherwise followed the recipe. The salad was good, although next time I will either cube the radish or grate it. The thin slices (cut in half because the radish was so large) tended to stick together too much.
Husband suggested photographing the salad with the snow behind it.
I had some trouble getting the color of the salad to be right given the bright white of the snow. Here's a photo of the salad with the color looking more like the salad actually looked.