NGL my favorite use of fire evocation these days is just doing magic for children, little flame characters and animals, fireworks with combustion.
But when explaining voidal magic, I always have the feeling that a ST will PM you if you don't explain the lore exactly as they deem fit. Like I can't put a spin on how my character understands and feels about the void. Because if I do, i'll get told off for not doing a robot reply from the wiki.