ok, so i use preserves for these and not marmalade....but marmalade, to me, just sounds so much prettier...i usually make this with my pinwheel cookie cutter, which I had lost but thankfully chef#246018 told me where i could get a new one. They are also good with the linzer cookie cutter, and look so pretty. Also, if you have neither, just use a round cookie cutter and fold sides in to make a triangle. I will try to get a picture soon because I don't really know how to describe it. One last thing, when rolling out the dough, try to go 1/8 inch thick. If you go 1/4 inch thick, the usually unfold when they are baking.