Looks better, but I might recommend making the edges of the smoke, especially higher up there, blended towards darker shades. I'd also say give it more of cloud-like shape, "billowing" or whatnot. At the moment the smoke still just looks a little too flat. A background around the trash fire might be nice too in order to add the variety and color that a trash can will inevitably lack. Maybe, a subtle red reflection on the metal will improve the color variation as well as give the impression of intense heat and fire.
