Hair and Makeup Trial Help!

My hair and makeup trial is this week and I still haven’t decided how I want to do my hair. It’s a struggle. 😭 I always thought I’d wear my hair down and curly. However my dress had a gorgeous keyhole back that I don’t want to cover up either. Picture of the back of my dress for reference and picture of how long my hair is. Also I will be wearing a veil for the ceremony and I did by a headband to use but it’s not something I have to wear. Does anyone have any suggestions or if you wore an open back or keyhole back dress how did you do your hair? I have a ton of pictures saved on Pinterest but I can’t decide. Help!