You could really go either way with this dress since it does have detail but if you keep within a similar scheme of beading, you could potentially go bold (if you have very petite earrings). If you're going for more of a large earring, I would suggest ditching the necklace since you wouldn't want the two competing with one another. A bare sexy neckline never hurts It's really whatever you prefer. If you're used to wearing a necklace it might be nice to have one for the big day. You have more flexibility with your neckline than I did with a one shoulder gown, so the possibilities and combinations are great!