[header] How to make a very berry trifle [title] Line the bottom of the glass dish with the sponge fingers evenly so that the entire bottom and sides of the dish are covered, leaving about two inches uncovered at the top of the dish. [substeps] This is to form a sort of' edible bowl' and make it easier to serve. This step is optional, but highly recommended, and could be replaced with flat meringue or even digestive biscuits. 
[title] Make up the jelly as per instructions. [title] Mix in the berries with the jelly so that they are evenly spread throughout the bowl.