I was planning on doing an edit to illustrate my point but unfortunately, Comcast happened.
I'll try to be descriptive. First, try to keep the smoke as one line, rather than scattered particles. Treat it like a slow moving sine wave, or a rotating curve. If you want inspiration, there's a series of french smoking adverts from i think the sixties I adapted this method from, I think in the art nouveau style if you need extra terms for googling them. I'm not sure if that's the right one though, so hopefully someone else knows what I'm on about!
