Here's one from my own efforts and my lessons from it.

The focus was not sharp. I began the session trying to focus on the sun's edge before the moon began to obscure the sun; it was not effective. The edge of the sun is in-distinct and more so if over exposed. Preliminary research on the subject recommended exposing with a spot meter and centering the meter. I believe that resulted in over exposed images and that I would have been better served lowering it down to where sunspots became visible. Sun spots could be used to assist with focus. The edge of the moon could also have been used to good effect particularly with a lower exposure. That was an omission made that should have been done and would have probably been effective or at least an improvement.

The camera was set up in advance for exposure bracketing. The increment was 0.7 EV, 0.3 would have been better. Also, there are two options for bracketing order, Low - nominal - high and nominal - low - high. For a Nikon for exampe, if "apply settings to live view" (d9 is on) and the bracketing order is low - nominal - high the view finder will reflect the under exposed image (number one in the sequence). This can be misleading and “fool” the photographer into an erroneous adjustment to increase the exposure as it did I.

In all it was a worthwhile experience beyond just the photographic challenges and lessons. The environmental changes alone were moving. Cooling and the breezes from it, shadow bands and rainbow colors in the clouds along with the changing quality of light. Those of us who were lucky enough to see it were blessed.