Would this work for prom, and how to accessorise?

I don't think it is quite ideal for a prom dress, don't you want to use a shorter dress or a cocktail dress since you had mentioned that you are 5'10 a shorter dress would look cuter on you. The hair style is perfect as for the make up make it simple and light as possible well if your pursue on wearing the dress you can partner it with plain pearl earing. If I were you I would go for a dress like this one a href="http://www.asos.com/Coast/Coast-Foxglove-Layered-Dress/Prod/pgeproduct.aspx?iid=1609197&cid=4034&sh=0&pge=0&pgesize=20&sort=-1&clr=Cream" rel="nofollow"http://www.asos.com/Coast/Coast-Foxglove…/a it would also be a perfect much for the hairstyle and the accessories you chose.