When you wax or tweeze your brows: use a straight object as a guide. they should Start: even with edge of nose to brow, Arch: straight from edge of nose, through center of eye to brow. End: nose outside edge of eye to brow.
Eyeshadow placement according to eye shape. Can you see your eye shape here? Forget how other people wear their eyeshadow, stick to your eyeshape, it will make all the difference to your overall appearance.