Another way, using a script for the arrow. Script is here: https://www.gimp-forum.net/Thread-Arrow-Script
IMHO best in a layer group.
A four minute demo:
direct link https://youtu.be/euyPOPDcNho
IMHO best in a layer group.
A four minute demo:
direct link https://youtu.be/euyPOPDcNho