Propping your phone against a stack of books works, but a cheap tripod with a Bluetooth remote allows for more natural posing.
Camera sensors tend to "wash out" makeup. You may need to apply it slightly more heavily than you would for daily wear, especially concealer and contouring to define features. ameatur trannies photos
To define your jawline, slightly push your chin forward and tilt it down. Propping your phone against a stack of books