The smoke in Draco had been done in PS! (We didn't have a no Photoshop rule in the last challenge! :-P) but I think it can be done in Bryce! Lemme experiment and give you a feed back (do you have Bryce 5 or 4?) also I agree with you that dirt doesn't burn, but, I feel, when you are communicating a visual idea you have to take into account and utilise some visual syntax to convey the idea. I thought the idea was great but I couldn't quite figure out that it was a light ray from a magnifying glass, right at the beginning! I guess if you had put in the concentrated rays as it is at the focal point of the lens it would be realistic, but a blade of grass or something else burning would also convey the message. But I agree with you that over working an image might affect its inherent charm! Great job on the ant BTW and I'll post as soon as I can offer something on wispy smoke!