Hi, these are really great and thanks for joining in! We're hoping at the moment someone can provide us with something that suggests a stone on fire - as if an unseen breeze from the left is blowing at this rock or stone that's on fire, and sending sparks or embers from it as it is hit by the breeze. No one has really nailed this yet, but I'm wondering if you'd be game to try? If not, no worries. I posted a link to a Nike image that kind of does that, but the concept is whatever you imagine it to be.
Thanks!