While we've got the summer still going strong (anyone with a garden won't be minding the rain for a week) it's tempting for a presenter to wear those lovely open toe shoes in an informal/formal kind of way. But DON'T DO IT.
I don't know why but open toes (no matter how nice the footwear) just never work. I guess because the audience is looking at the whole of you when you're standing in front of them as a speaker… all that jumps out is not your eyes, but your feet! Never mind those manicured pinkies, your feet will not only jump out.. but get bigger while you speak. The eyes get inexorably drawn down to them.
I know it's strange. But true.