FLUX.1 Dev Version
Use sparkling effect in the prompt. Works better if you write it into the prompt naturally, for example:
portrait of a woman surrounded by a sparkling effect
a dragon flies through the sky against a sky of sparkling stars
SDXL Version
🎇 Add sparkle to your images with sparkling and bucket load of sparkle with sparkling and stars.
Adds glitter to clothes and surfaces and adds lots of sparkle into the background. ✨
For best effect, add trigger words to clip_g and clip_l.
Add sparkling to the start of the prompt for strongest effect. 🌟