Live Action Autumn Smoke Monster made in Houdini + Redshift + Nuke

There I was just filming my driveway like I always do on Tuesday afternoons when Boom! Autumn smoke monster appears seemingly from another dimension. Rarely caught on film, they are actually quite harmless but will steal your pumpkins. Keep your pumpkins close kids.

Sidenote: this is my first somewhat legitimate live action cg clip and would love your feedback! Is it somewhat convincing?? I can't tell anymore.

Camera tracked and composited in Nuke, sim in Houdini + Redshift