173: Colour and Style Q&A: How to mix and match greys? How to wear ballet flats in corporate world? How can I flatter my figure and distract from my tummy?

How to mix and match greys so they look good and I don’t look like I’ve gotten dressed in the dark
I have a back issue that means I can’t wear heels but I don’t feel polished in my corporate work outfits in ballet flats.
Petite H Shape with a tummy, how can I flatter my figure and distract from my tummy?