Smile at and for the camera ranging from a closed-mouth coy smile to flattering wide smile to laughing grin. When taking a selfie, stick with honest poses. Angle your face slightly with neck straight and chin a bit down. Hold the camera in extended arm at ten to thirty degrees inclination. The camera should look down on you. This way, selfie will be more interesting aesthetically than a straight-on photo.
Thus, for a reasonable selfie, tilting your face with three-fourth facing the camera is a great way to go. And this is where your camera timer comes in handy. At times, you may like to prop your camera on something and hit the timer button to get a selfie.
So the most important aspect taking selfies is to learn your angles through experimentation. Play around with the camera and take a few shots to practice with different angles. Thus, the most important tip in taking selfies is to take photos from above with slight down-tilt of the camera.