The biggest mistake women make is wearing pants that aren’t the right length for their shoes. Pants should be hemmed to work with flats or heels, there is no way that they can work with both.
Generally, hems should just graze the tops of your shoes and be 1/2 to 3/4 inch off the floor at the heel. Invest in a full length mirror and always use it. pants that are too short and too long can ruin an outfit.