Lately, I have worked with PSP only to create stuff for the Build-A-Kit Workshop. Most of the time, I watch and practice tutorials for Affinity and PSE.
I came upon one tutorial from Affinity Revolution that I liked very much because of its simplicity: adding Shine/Glow to an object.
There is a Masterclass—2017 Fantasy World—where Carole adds this glow feature, among other great techniques she teaches, and I have always liked it very much.
The Affinity technique requires adding a black layer, changing the Blend Mode, and painting with white.
These are the two photos offered to practice along, and the same pictures with the effect I added.
Not everything in Affinity is perfect, but I do like this app.