i think what makes my outfits are:
how good my mascara is
my earrings/jewelry
or a backpack/purse

I think bad color combos break outfits. I'm usually very intentional with colors so when they don't work together it's a no for me no matter how hard you might try to style it... But what can immediately make an outfit look good I think is a good, fitting hairstyle ^^

I think that attitude and confidence can make or break an outfit for SURE! Even if the fit is FIRE, if the person wearing it isn't feeling themselves, it can make the fit devoid of all swag, unfortunately.