Add the crunchy layers of praline or nuts neatly into the mousse.
Lightly salted nuts and praline enhances the sweetness and balances it.
Dried fruits like raisins, cranberries etc., bring a chewy texture.
Avoid adding bulky elements and instead add thin crunchy ingredients like tuile shards, brittle, or cookie crumb.
If mousse is sweet, balance it with bitter and nutty additions like nutty chocolate bark.