Louis Malle — French Director born on October 30, 1932, died on November 23, 1995

Louis Marie Malle was a French film director, screenwriter, and producer. His film Le Monde du silence won the Palme d'Or and Academy Award for Best Documentary in 1956. He was also nominated multiple times for Academy Awards later in his career. Malle is one of the few directors to have won the Golden Lion multiple times... (wikipedia)

You must find the note, the correct key, for your story. If you find it, everything will work. If you do not, everything will stick out like elbows.
I didn't feel like going any further in this scene with the boy. He was not a professional actor, and if I had pushed the scene any further it would have destroyed the tone of the movie.
When you are working on a script, the story itself is not difficult. You say this would happen and then this, resulting perhaps in this. And the dialogue you make as true as you can.
Well, Fellini... there is always Fellini.