This image was generated by using the following prompt:
Prompt: (handsome man smiling, studio photograph), post processing, post production, detailed and intricate, tone mapping, hyper realistic, photorealistic, ultra photoreal, ultra-detailed, intricate details, 8k, super detailed, full color, surrealism, full detail, ray tracing, best quality, extremely detailed.
Negative prompt: (worst quality, low quality, normal quality:1.8).
[Control + A] to select all.
Go to [Select -> Shrink selection].
Press [Control + Shift + I] to invert the selection.
Select the Gradient Fill and select a gradient.
Drag from top left to bottom right to create a gradient border.
This is the end of the tutorial. 🙂