Can you help me invent a recipe?: Japanese Christmas cake trifle?

Question:

A traditional japanese christmas cake is a sponge cake with a filling of whipped cream mixed with strawberries, frosted with whipped cream and topped with fresh strawberries.

The cake itself just seems a little light for Christmas dessert so i thought it would be fun to turn it into a trifle.

I'm thinking sponge cake or pound cake cut into cubes, topped with strawberry jello, custard or pudding, whipped cream and fresh strawberries.

Any other ideas or tips?

Answer:

I've checked for a Japanese Christmas cake trifle. However I cannot find any. But I found this

Ingredients
1 (12 ounce) container frozen whipped topping, thawed
1 (8 ounce) container sour cream
1 (9 inch) angel food cake
1 (3.4 ounce) package instant vanilla pudding mix
3 kiwis, peeled and sliced
1 pint fresh strawberries, sliced
3 bananas, peeled and sliced
1 (15 ounce) can crushed pineapple, drained
1 sprig fresh mint
Directions

In a medium bowl, fold sour cream and unprepared pudding mix into the whipped topping.
Cut the cake into thirds, horizontally.
Line a large trifle or other glass serving bowl with kiwi and strawberry slices, reserving two whole strawberries and two kiwi slices. Place one layer of cake in bottom of bowl, top with 1/3 of bananas and pineapple, and 1/3 of whipped topping mixture. Repeat layering until all ingredients are used.
Make fan garnishes of whole strawberries by slicing from just below the stem. Garnish assembled trifle with fanned strawberries, reserved kiwi slices, and a sprig of mint. Refrigerate until serving.