The key is once you decide what size you want the piece to be DON'T change the size dial. It may seem strange to cut eyes at 5" but they are set to be in the correct proportion for a 5" piece.
Also keep the Real Dial size OFF.
Then just cut all the pieces. You will cut the base with no special features on. Then you will have usually have to make a selection with the shift on and off for each of 3 special features. Then if you want even more matting, you can cut one with the shadow special feature.
Once you make the first one, it will get a lot easier.