Very cool. Piggybacking on HW's suggestion...I put some of the ash from my barbeque grill in a ziplock bag then some of Dennis Brennan's coal and shook it up. That gave the coal a used look. I filled the pit with that then I accented with more of the ash from the grill. I buried LED blinking fire lights but I did not install smoke. Now I have to do that!
Again, you did an awesome job!