If you have a palette knife it makes it so much easier to spread frosting. But a regular knife or spatula will do just fine. Take one of the layers cakes and place it rounded side down on a cake platter. With a spoon and or knife spread some jam on the top of the cake, not too thick as then it becomes runny. Place the second layer round side down on top and repeat with jam. Now place your top layer on (I like to do round side up for this one but it doesn’t matter) and take your frosting and cover the entire cake, be generous, you have enough. Now you are ready to decorate your cake. If you are really good use some of your frosting and pipe out pretty rosettes, etc. Or you might be like me I do not have a great knack for that so I will sprinkle with red and green sugar. Or sometimes I grated extra chocolate (both milk & white) flakes on top. Or sometimes I write Merry Christmas with the extra Jam (I will pipe that on). You can also use fresh raspberries (or strawberries (also dipped in chocolate too).Once done decorating put in the refrigerator for about an hour or two before serving.