Here is a skill series for a Men's four showing how to create the three high (or temple) pyramid with the top on the shoulders of the middle.
Thanks to the four men from Portugal performing the skill series and to Karl Warton of the FIG and Toshko Pavlov an FIG Acrobatic Gymnastics coaching expert who are assisting in the creation of this pyramid.
Notice that they start by breaking the pyramid down into its parts: the bases with the middle. Then the middle and the top simple on some stable risers. Then they move to the less stable pegs. Then they take it up onto the bases.
Always try to think of how you can break a skill down into its parts first. It will save you time and frustration as well as make the first time you try the full skill that much safer.