I think black with brown looks good.
No stockings/hose with sandals, though I don't like hosiery to begin with.
I like horizontal stripes, but shirt must be loose with fitted waist or else that is NOT flattering.
Don't mix styles (i.e. stripes with prints, etc.)
I like white shoes (leather only, no patent leather)
No holiday-themed clothing
Fitted clothing
I also don't like people who have a patch of tummy sticking out between the shirt and the jeans (flat tummy is ok, bulgy is not).
I love basic white and black.
I also like mixing jewelry tones (i.e. white with yellow gold), but only spare jewelry. Don't cover yourself with bracelets, necklaces and the like.
And yes, please have nice toes when wearing sandals...which is why I'm not wearing sandals this summer because my middle toe got into an accident a while back and I'm waiting for it to recover. I'm already disgusted, I don't want others to suffer also.
Anything else is a go, as long as it flatters your body shape and you feel like you can pull it off, go for it!