In a medium bowl, whip the heavy cream with the powdered sugar and vanilla extract until soft peaks form. Set aside.
In a large glass trifle dish or individual serving cups, layer half of the angel food cake cubes at the bottom.
Add half of the prepared vanilla pudding over the cake layer.
Layer half of the sliced strawberries and half of the blueberries on top of the pudding.
Spread half of the whipped cream mixture over the berries.
Repeat the layers with the remaining angel food cake, pudding, strawberries, blueberries, and whipped cream.
Finish with a dollop of whipped cream on top and garnish with fresh mint leaves.
Chill in the refrigerator for at least 1 hour before serving to allow the flavors to meld.