Take A Picture!
Take a camera with you on the trial day. This will ensure that you remember what the hairdresser is doing and also if they do not have a camera then at least you know you have the evidence from the trial to remind the stylist, should there be any problems. Also, on the trial take pictures from all angles including side profiles and pictures from the front.
I say this because the photographer will capture you all day and at all angles and you want your hair to look unique and perfect throughout the whole event.
