Do you use a pumice stone on wet or dry skin?

Start by putting a shoe tree in each boot so your boots don't lose their shape. Then, use a suede brush or an old toothbrush to gently brush the surface...

Yes, if it is under sunlight. That will help it dry more quickly.

I think dry is the best option. It makes it a lot easier to identify cowlicks and anticipate the way the bangs are going to look when they're hanging naturally.

Work with your hair dry first so you can see the natural shape of the curls. If they're wet, they might get weighted down.

Hit the other stone at a slant, from the bottom to the top, so the top is pointier. Don't hit too hard or too soft.

No, your skin has to be drenching wet. It's a super common misconception, but your skin has to be totally soaked. You cannot apply makeup to dry skin, period.