To discourage child from doing something he really wants to do because he will be rubbish at it?

[WallisFrizz]

DS is Y1. They are having a school talent competition. He wants to enter...playing “air trombone”.

He is adamant he wants to do this and I have seen his act...it will not end well for him. I tried to tell him this and he looked crushed.

Should I just let him get on with it?

Air trombone accompanied by air drums is awesome! Just the idea is great - who cares about the execution