The jacket is super cool. I noticed the same thing Jonesy mentioned about the where the sleeve is sewn into the armhole. I don't understand the creasing there. I think this is a good style to keep in mind, as you might find something similar at Zara or COS. Mohair has the same effect on me. I can feel it even if it's not directly touching my skin.
The BR dress is a good standard, in your go-to black. I don't find it dramatic or edgy, despite the color. Maybe try rolling the sleeves? Did you try it without the belt?
I wonder if the size up would give enough slouch to make it a bit edgier looking.
Also, I think your hair and shoes will add the edge. Maybe the dress doesn't need much drama.