Place it right after the failed attempt in your edit, then follow it with a shocked reaction before closing on a laughing follow-up, so the verdict comes first, the surprise comes second, and the laugh closes the sequence.
À propos de ce son
This is a 0.6-second voice clip of a young girl delivering the short line 'do better' in a clear, matter-of-fact child's voice. It feels cheeky and dismissive, funny because such a blunt verdict comes from someone so young, and it works as a tiny, confident put-down rather than a long scolding.