Focus on the lower part of your face which is from the end of your ear loop down to your jaw.
Look into the mirror and ask yourself, does your jaw line look soft with curves or angular with angles?
Is your face long and narrow or wide and short?
Answer to question 1;
Soft with curves jaw line
Wear your jewelleries such as earrings, necklace, eyewear, hairstyles, and necklines in curve lines. Complement with your curve jaw line, do not conflict with your jaw line because this will make you look very rounded.
Angular with angles
Wear your jewelleries such as earrings, necklace, eyewear, hairstyles, and necklines in angular lines. Complement with your angular jaw line, do not conflict with your jaw line because this will make you look very angular.
Answer to question 2;
Long and narrow face
Fringe will look lovely on you.
Wide and short face
Show off your forehead; do not cover them with fringe because this will make your face looking shorter. Eventually, people have to search for your eyes.
Next you look at the bridge of your nose. For those with long bridge nose, you can either camouflage with slightly darker foundation or loose powder. But you must avoid centre parting hairstyle. Apply some dark colors on the nostril area and darken the centre of your nose.
If you have very square jaw line, use a darker foundation or concealer and shade the side of your jaw to give an impression of a curve jaw line.
Nevertheless, I strongly recommend you to not to do so much camouflage, but to enhance your better features and nobody will even notice your flaw.