How can you tell when apply makeup like blush,foundation,etc on dark skin how can u tell when its ashy in pics

please show me with closeup pictures of the ashy looking dark skin and pictures of how it looks correctHow can you tell when apply makeup like blush,foundation,etc on dark skin how can u tell when its ashy in pics
Some makeup contains crystals, metallics and certain minerals. The flash from cameras and/or lighting in the room will pick it up causing a false look or pale skin tone color.How can you tell when apply makeup like blush,foundation,etc on dark skin how can u tell when its ashy in pics
i have no pics sorry. ur probably useing the wrong kind of makeup try mac as they have more shades for darker skin