How can I style my hair for our family portrait?

My parents have 5 kids and getting us all together is a rare occassion. Since we all came home for Thanksgiving this year they decided we were going to get an updated family portrait (the last one we got done was about 9 years ago). It’s at 9 am and I have a nice sweater but now I need something to do with my hair, after all this picture could be the last family portrait for another 9 years.

My hair is shoulder length. I am half black so it is curly/kinky. I can straighten it but the ends are not so pretty. I was thinking half twistys and leave the ends curly it but I have nooo idea how to do them (yeah I know just twist but they don’t seem to look like they’re supposed to when I do them). The portrait is tomorrow morning so I need something that I can do myself, all suggestions welcome and pictures are encouraged :)