1. Use tripod: It will be the best choice to use a stable tripod to fix the mobile phone. This can keep the picture stable, and you can move and adjust the angle freely.

2. Natural height: the mobile phone is placed at the position equivalent to the dancer's eyes, slightly higher than the eye level. Present a more realistic and natural perspective.

3. Horizontal direction: The mobile phone is in a horizontal state to avoid tilting or distortion of the picture.