Little, depending on the dress you could go with knee-high boots, or these (pic 1) from Sezane may be good with a black wrap dress? They're Ponyhair (probably cow though), so it's less of a garish flat print that way and it would have some life beyond this dress as you can easily wear those under jeans quite casually. I'm not someone who gets on with leopard on the top of my body but it's usually fine on the lower half (though high heels push it too far) and even more wearable in a good finish.The same model also comes in black suede and black and tan leather, but those seem a bit dull.
Yes, Proper, drapey tops work on flatter chests too as you're basically toying with volume but you'd want a slightly higher V, not one that dips so low to gain more volume in the breast area (which someone with breasts would want to avoid, unless they'd also want to emphasise their chest).
Hmm, I think the 10th is mostly comprised of Gare du Nord and Gare de l'Est and all their tracks banana. It's mostly hotels and offices but around the Avenue Magenta I think there's a small immigrant community. Not that those should be disregarded for fashion inspiration, I've seen some amazing dressing, men and women, in African oilcloth in Paris.
Lazy, I've attached a pic of Kiko's reds in the Gossamer Emotion texture, which is quite creamy and hydrating. You can see the 114 (will attach another pic) is the closest to a true red there and then down it goes blue and up it goes orange. 113 (3rd pic) would be a good blue-based to try but I haven't really studied these at length all that much in RL but they are quite affordable. I agree with Enid that you could possibly be neutral, another sign is if you can wear both silver and gold jewelry without either being odd looking.
I find MAC staff generally to be unpleasant and unwilling to help, seeing that it's not just my local counter I boycott them on that principle as it seems the company seems fine to hold this reputation. Intimidating, no, unnecessarily snooty seems more accurate a description.
NorWoman, I don't really concern myself with timepieces but I suppose brands like Hermes, Jaeger Le Coultre, and Cartier, possibly a vintage Dior, will be handed down through generations, you wouldn't see a brand new one all that often. You do see the odd fashion watch as part of the bangle stack up but I think most women have a pretty simple leather band version (brown or cognac) in a more timeless style that didn't cost them all that much or they just don't wear them.