This image was generated by using the following prompt:
Prompt: watercolor painting of two lovers walking in the woods together, walking away from the camera.
Negative prompt: (worst quality, low quality, normal quality:1.8).
We can remove the background by using one of the methods available in [Various ways to remove the background].
Open both images in Krita. Go to the second image with no background. [Control + A] to select all. [Control + C] to copy. Go to the background image, and [Control + V] to paste.
Select the background layer, and go to [Filter -> Blur -> Gaussian Blur].
This is the end of the tutorial. 🙂