It's funny, as this was my very first question when I was just starting getting into graphics, having the concept of layers etc. only in my "to read" notes.
To avoid making a pointless post in its entirety
'd like to propose an additional function related to the subject:
Select > Feather...
https://docs.gimp.org/2.10/en/gimp-paint...feathering
To avoid making a pointless post in its entirety
'd like to propose an additional function related to the subject:Select > Feather...
https://docs.gimp.org/2.10/en/gimp-paint...feathering