This image was created by Stable Diffusion with the following prompt:
Prompt – businessman standing in front of a wall, not facing the camera, looking at far away distance
Negative prompts – (worst quality, low quality, normal quality:1.8)
The background was removed in Stable Diffusion, by using an extension called [stable-diffusion-webui-rembg].
I opened the background removed image, pressed [Control + A] to select all, [Control + C] to copy, went to the original image, and [Control + Shift + V] to paste in place.
Go to [Select -> Modify -> Expand].
Go to [Select -> Modify -> Border].
Create a new layer, and fill the selection with white.
Add a green outer glow layer style.
This is the end of the tutorial. 🙂