How to become more photogenic?

I have an iPhone and I look so bad on its camera! And I'm ashamed of all my pics! Please give some tips!

There's an awesome app I love called Retrica- it plays on lighting and there are loads of different effects you are bound to be able to look good in!
Try mascara and a smokey eye close to your skin tone so that it's delicate and more or less natural looking. Make sure you look natural and aren't trying to force a smile. I find that if you can take a god picture, sometimes candid is even better than prepared for!
Best of luck