My 4 images of fire. I really like how the explosion image turned out. Used some reference images from Pinterest which was an idea I got from the drawing course. Used the “plasma palette” in Gimp 2.10. Found that the batch image manipulation tool is very useful for exporting these images if you use one layer per image and then leave the dialog open after applying and just switch layers, save, and repeat.
Explosion:
Comet:
Flame:
Raining Fire: