My only tips to wear a black dress would be to find the right shape for your body and style. I personally prefer a minimal style with a nice cut or with a contrast fabric like in the middle dress. I love the contrast shiny fabric in the collar.
Also finding the right accessories is very important, if the dress is minimal you can wear a nice statement necklace or clutch bag.
The heels have to be delicate but make sure that you can walk and dance on them, there is nothing worst than seeing a woman walking badly in high heels you have to walk confident in your heels and last but no least do not forget to shave your legs!