The more you photograph clients, the more easier it gets to get them to let you take their picture! I learned long ago that having a small portfolio with you will go a LONG way to getting someone to trust you. Having an iPad with some other photos you’ve taken will make someone eager to let you photograph them, instead of being wary and skeptical.
Here’s another client of mine. Nothing special, just a razor bob, but it was a big change from her long hair and made her look so much better!