Heat 8 was a terrific heat for examples of creative use of the given genres, and this film was no exception. The idea of exploring the difference between what kids and adults find funny was a great starting place for this story. In this case, the POV was very definitely on the kids' side, with the adult characters made out to look increasingly unlikeable and thoughtless, and ironically rather childish. The kid actors in particular did a great job of showing the fear of the situation.
I felt there were a few missed opportunities to heighten the tension, for example by varying the types of spooky things that were occurring (the exact same lamp-outside-the-tent trick happening twice could have instead been an escalation to something different), and also maybe lending more ambiguity to the source of the disturbances. As it was, it seemed likely to me that the adults were involved, but that's okay. It was also not a surprise to get the real killer clown at the end, but again these things don't have to be a problem, if the execution of the scenes works well enough, as was generally the case here.
I like the use of the wind blowing the clown poster, although it seemed sort of a back-to-front idea, since such a shot can be used to reveal to the audience something (e.g. a older poster hidden beneath) that the characters miss. Still, it obviously linked into the mention of a circus they just missed - did we need more context around that, to help with the horror story later, such as the circus ending badly, rumours of a clown dying, etc.? Not sure.
Anyway, a fun wee short. In terms of storytelling, I'd say something to think about for next time is finding ways to heighten the tension or drama in small,gradual steps along the way, to keep the story changing and developing throughout. But great effort nonetheless.
(Amusingly, there were also some accidental commonalities with other films in the heat, in particular the clown and the cat onesie. Great minds and all that...)