my first advice is to quit smoke (lool just kidding, you're free to do what you want ;)).
now seriously, you must play with the light...
as you can see 2# shot the ISO is too high 1250 ...i think if it was lower the smoke would look better ;)
I think I got the idea you were working on, but well these are nice! but darker would be something interesting to see, in my humble opinion :)))