Nicely done Kdot, and an unusual take on the theme.
It's not easy getting the focus right at these close distances, although I have, but not an hour ago, tested out another way of doing it... focus priority (read about it on here)... Set the lens to AF, get inside min focus distance, or with the converter way outside so the lens can't locks focus. Let the lens hunt in and out, then when it fails to lock focus and stops, press the shutter button all the way down. The shutterwon't fire. Move the camera until the subject comes into focus, as soon as focus locks, the shutter fires...