The best place to position your phone when taking selfies is to hold it parallel to your face with the camera lens at eyebrow level. This will help ensure that your whole face is visible in the frame and avoid any double chin issues. It is also recommended to tilt your head slightly and raise the camera up so you are looking down at it. This will help to capture your face in the best possible angle. Additionally, it is suggested to pay attention to the background when taking a selfie, as backgrounds with softer colors tend to bring out a better selfie. If you are in a pretty place, try to capture it in the background as well. It's also important to consider your facial expression, try to embrace natural expressions and say yes or yasss in your head or inhale just as you hit the shutter for lightly. Also, it's recommended to use the front-facing camera timer to capture the perfect selfie moment, this will help you avoid blurry shots caused by shaky hands.