up, down, twist it all around?

hey so I'm not entirely sure what to do with my hair and I'm having trouble finding ideas. my dress has really thin straps and an open ish back and I have long straight hair. I think I'd like to do an updo just to get it off my back but I was also thinking kind of half up half down and curly. what do you guys think? I usually like simple instead of big and bold
possibly?

I really like that style. Instead of having the pieces in the front straight, I would spiral curl them instead.

How about parted on the side and swept across your forehead and pinned ehind your ear on one side?