Can a Setting Sun Cast a Shadow Upwards

I watched a video by flat earther Phuket Word a long time ago where he claimed the sun couldn’t cast a shadow above a horizontal level line. (It’s been awhile and I don’t bother with Phuket Word anymore, but if I can find the link to the video, I’ll update this description with it.) Found it: “Shadows on a flat earth will never go higher that the object casting the shadow“. Though we’ve seen that the sun can and does illuminate the underside of clouds, I’ve been wanting to try a controlled demo to see if I could detect a shadow being cast upward at sunset. The horizon was not as sharp as I had hoped, but I think I did managed to capture the fact that the sun does dip low enough to cast a shadow above horizontal. I’d like to try again from a higher elevation and with a clearer horizon. I welcome any constructive critiques before then, especially on how best to present this so it can be cited a trustworthy evidence of the fact