Your hair's pretty great as is, & I'd keep jewelry simple. One short necklace in black, or silver, and a matching bracelet on one arm. Go easy on makeup. We fair skinned people look like clowns with too much. You don't need it, anyway. You look great!
I would do a wavy loosely pinned up bun with pieces framing your face. Or jewelry I would get a crushed onyx gemstone bib type necklace. It will go well with your shoes and keep with the simplicity of the outfit.
An updo would look good with metallic jewelry (gold or silver) or even more fun colorful jewelry (try not to get into costume jewelry tho;). Dont get too complicated with jewelry or youll ruin the simpleness and classicness of the dress. Have fun!(: