Originally I retrained a data set for a model that was exclusive to DiffusionBee (you can find that "darkglowstyle" model along with a few others here https://huggingface.co/brushpenbob/DiffusionBee/tree/main but again that file format is unique to DiffusionBee) this is a LoRa created with the same Data set in CivitAI, - see walkthrough video below.

It can be a bit heavy handed so you can have some leniency with weight. in my demo im ising a weight of 1 but a little trial and error you might find what works best for your needs

Using SD 1.5 as its base and a series of glowing / bio luminescent style art it was trained to give your image that bit of glow its missing