Before beginning the trifle, bake the cake as the box instructs for a sheet pan or 13"x9" pan. You could also just purchase a premade white cake (not frosted, angel food cake would be perfect). Let the cake completely cool after baking. When it is time to begin assembling, cut the cake into 1"x1" squares.
Also make the lemon pudding according to the box's instructions and place in the refrigerator for at least 20 minutes to set.
While you are waiting for the cake and pudding to set, wash the strawberries and cut into slices.
In a large mixing bowl, pour in the heavy whipping cream and beat with an electric mixer until the cream thickens and soft peaks begin to form. Add in the powdered sugar, vanilla extract, as well as the almond extract into the whipping cream. Beat on high until the cream is a thick, stiff consistency. Place in the fridge until you are going to begin assembling the trifle.
Once the various ingredients are ready, begin layering the cake, pudding, strawberries, and whipped cream. I like to begin with the cake, then layer either the pudding or whipped cream, then the strawberries, and last the pudding or whipped cream (whichever one I didn't use already). Continue layering until you reach the top of the bowl. If you would like to add some fancy, you could pour the remaining whipped cream into a piping bag with a star tip and create a design. Sprinkle the lemon zest over the top of the last layer of whipped cream. Store in refrigerator until serving time.