The way you are doing partner captures is wrong. The correct way doesn't feel natural and requires strict discipline from both the capturers and capturee.
An efficient way to get down short drops as an alternative to rappelling. One or two canyoneers help to lower another canyoneer by pressing him/her against the cliff to provide friction and slowly lower the canyoneer to the ground.
In order to become proficient in partner captures practice outside of canyons is paramount. It took me years, many practice sessions, and several sets of instruction from the greatest down climb guide before it finally clicked. I hope it doesn't take as long for you.
The capturee is the canyoneer who is being lowered. The capturee actually does very little and must trust and rely on the capturers to get them down safely.
The capturer or capturers are the canyoneers who are lowering the capturee.
Once the capturee is low enough...
There are two types of pyramid captures. One of them, common in Utah County, is also known as MLM recruiting. The canyoneering pyramid capture builds on a standard partner capture. There are three levels, the top-level-capturee, middle-level-capturer, and bottom-level-capturers.
The top-level-capturee's job is the same as the capturee in a partner capture. The only difference is that they will be captured from a much higher distance.
The middle-level-capturer's job is to hold up the top-level-capturee while they are captured with their belly toward the rock. Their body will be captured completely. Once they are down they assist capturing the top-level-capturee.
The bottom-level-capturers have a similar job to the capturer on a standard partner capture. The only difference is that instead of slowly lowering one person they will be slowly lowering two people stacked on top of each other.
Why is the pyramid capturing in this order with the middle-level-capturer being lowered with the top level? Why not capture just the top level to the ground and then the middle level? The main reason is that the middle-level-capturer does not have the ability to push the top-level-capturee against the rock and therefore cannot preform an effective capture. And how do I know that? I was in a group that tried it this way once and the top and middle levels both came crashing down. I made that mistake for you and me so you don't have to.
Partner captures rely on pressing the capturee against the rock to provide friction for easier lowering. Consequently partner captures using this technique do not work when the drop is overhanging.
It is possible to generalize this technique to allow for overhanging captures, but I have no experience with it and can only refer you to a Canyon Collective forum thread where Ram describes a technique called The Circle of Love.