Download the APP(Snapseed) on your mobile phone first. Take a good photo of the mobile phone, and the light will be better. First adjust the brightness contrast in the photo album of the mobile phone >> and then reduce the purity >>. Turn it into a black-and-white photo, then open the APP(Snapseed), adjust it with the curve tool inside, and then click √ to export. Just follow the order of the pictures below.
Then open the application (Snapseed) and click the steps:
Open the adjusted picture on the mobile phone,
This is an anti-white copybook. Check √ to save or export.
If you want to add a special shadow, please follow these steps:
Add a pre-stored shading to your phone.
Finally, just tick √ to save or export.