I'm not good with photoshop at all. Period. So I tried my best to get the details right during the shoot. But you don't get much choice when you clients want the bright green flip-flops removed from that otherwise perfect picture.
The first thing I thought about is color replacement to change that bring green to silvery color so it will be discreet. Turned out I tried different methods of color replacement I saved up before, and none of them work well. Green became dull concrete color. It's more discreet, but still doesn't look nice at all.
Finally, how could I forget my favorite tool in Photoshop! It's "Warp tool" under Transform. So I decided to elongate her skirt to cover her left feet. Ta-Da! ~5min and done. (Youtube will have better videos than I can describe here by words on warp tool instructions).
Then for her left feet, I just did some color replacement since it's unnatural to cover that feet as well, and it's discreet enough already.