The second light or reflector is placed 45 degrees from the other light, on the camera side of the subject, and is about half the power of the main light.
But, you still need to practice good control, so that the photos don't get to where they should not go.
All the women would take their tops off, and at times their bottoms.
If you see them as fellow humans with personalities, they may be more inclined to feel comfortable with you.
As some others have suggested, work up a portfolio of clothed models first.
Mensez technology is a Chitosan based that will soon be available on very thin panty shields, when you wear them the Mensez compound causes the mucous membranes of the labia to cling together and prevents accidental leakage.