I say just look online at some celeb pics. If you google long black hairstyles images you will come up with lots and lots of ideas. Thats what I did to come up with an idea. If you are wearing a sew in then just take the
pictures you like to your hairdresser so they get exactly the look you are going for. I also recommend getting your sew in at least a week before so if you decide you dont like the style it can be changed well before the wedding.