I've found that visiting braiders/weavers beforehand can be a major benefit
because you have a chance to talk to them about prices, styles, and most
of all, SEE pictures of their work. If you come at the right time, hopefully another
customer is their so you can see her in action.
I think all stylists should have portfolios and should be able to show that
they have some skills before you commit to letting them do the work. If you are
going to relax my hair, I want to know how often you do relaxers and see pictures
of some clients you relaxed. Seeing is believing.