3 step to make the amazing effect:
1. Cut the part of the photo you wish to make the effect
2. Select a back photo
3. Adjust the angle of the cutting part
1. Angle: 3 ways to make rotation of the afterimage. 2 ways to adjust the size.
2. Filter: Brightness, sharpen,blur ,black and white for the back photo. Hue,Transparency for the afterimage part.
3. You can save the synthesis image or just save the cutting part to iTunes document.
4. Available to import the cutting image that you ever make , if you want to use the cutting image next time, just save it to the iTunes document.