Follow these steps to create your Red White and Blue Trifle:

1. Prepare the Berries: Wash and slice the strawberries. Rinse the blueberries and set both aside.
2. Make the Pudding: In a bowl, whisk together the instant vanilla pudding mix and milk until thickened. Set aside.
3. Whip the Cream: In a separate mixing bowl, beat the heavy whipping cream, powdered sugar, and vanilla extract until soft peaks form.
4. Combine Cream and Pudding: Gently fold the whipped cream into the pudding until well combined. This will create a light and fluffy mixture.
5. Layer the Trifle: In a large trifle dish or individual serving glasses, start with a layer of cake cubes at the bottom.
6. Add Pudding Mixture: Spoon a layer of the pudding and whipped cream mixture over the cake.
7. Add Berries: Layer half of the sliced strawberries and blueberries over the cream mixture.
8. Repeat Layers: Repeat the process, adding another layer of cake, followed by the pudding mixture, and then the remaining berries.
9. Finish with Cream: Top with any leftover whipped cream mixture and arrange a few fresh berries on top for decoration.
10. Chill: Cover the trifle with plastic wrap and refrigerate for at least 30 minutes before serving, allowing the flavors to meld.

These simple steps will guide you in creating this incredible dessert that will impress everyone.