Place the cup of berries in a food processor until the berries are all blended. This is a personal taste, you can process until very smooth or leave it with chunks of fruit.
Make the shortcake if needed and set aside until cooled.
Break your cake by hand into large pieces.
Making layers in a cup or tall bowl, with the first layer being a few pieces of the cake, then add berries, then the whipped cream.... and so on.
Once you have reached the top of the cup pour some of the berry sauce over it and decorate with a berry. You can also add a spoon of the sauce in the middle of the trifle too.
Best way to eat this is to mix everything first so there's a little bit of each layer in every spoon.
Enjoy!