Place the cottage cheese, milk, orange juice concentrate, vanilla and orange peel in the bowl of a food processor. Process the mixture until thoroughly blended. In a 3-quart trifle bowl or other glass bowl, layer half of the cake pieces, cottage cheese mixture, whipped topping, strawberries, raspberries and blueberries, and then repeat the layers. Sprinkle the top with almonds. Refrigerate the trifle for at least 2 hours or until firm. Cover and refrigerate any remaining trifle after serving.