Bridal Hairdo's...

Ahan, I am in a delimma. Actuallly, Mashallah my hair is pretty long. I ll have to settle with the updo (bun) on the engagement party. The problem is that my forehead isn't that wide but it isn't too small either (per na ubhar hai mathe main chipta keh stake ho ap??) so what I should do? Should I have it mid/centre part for the bun/updo or without it? or should I have it pulled back with backcoming? ufffffffff please advise me