I usually take a little more off when I cut back. It thins the foliage. I don’t just try to get the outline smooth. So, the growth is a little more lignified than the terminal shoot, so I use scissors rather than fingers.
A pyramid would be symmetrical. I don’t do that. It also assumes no negative space. I don’t do that either. The Egyptian pyramids have chambers inside. I strive to have interior foliage, not a void under the exterior canopy.