How to accessorize this dress--?

Well, since that dress is dark you might want to accessorize that with a few lighter colors. First off, I suggest a necklace because this dress IS strapless. Secondly, some black or white earrings, which may look like a checkerboard if you do black and white. Thirdly, the shoes might actually want to be a dark gray or even black. You can wear bracelets if you want, too, but I wouldn't because there is already so much accessories. For the accessories I suggested, I think you should keep them all the same color, so that they match, but it's all up to you!