I really love floral prints like this and tee peachy pinks with black is a really nice, and slightly less common, colour scheme. I will point out before launching into the outfits that this dress does have less than wonderful lace but since it's primarily black on black I don't think it's a bit deal.
First up I did a bit of an old-school gothic look. It's meant to have black lace-topped OTK socks too but mine are in the wash at the moment. A rectangle headdress would be perfect, but I don't own one (unless the chocker that came with this dress counts, which I suppose it does since I've worn it before... oops... shoulda included it...). The chunky shoes and overall simplicity make it quite a nice outfit, I think, even though it's not much in a flat-lay.
Then I went the full classic route and I love it! Seriously, I can't wait to figure out the perfect photoshoot for this outfit. I would wear this with black lace tights, but they never photograph well unworn. I'd also do something so un-me and pile of pearl jewellery for this ad do a fancy up-do because this is about as OTT as I go.
Lastly, I came up with a super simple sweet leaning outfit. I love that this dress can (kinda) span all three substyles, though it's definitely mostly a classic dress.
I have to say, even though I don't have very many accessories that match this dress I really love what I can do with it, and can't wait for an opportunity to dress up in it!