Here is a little clip, AJHanneld,
I hope it is not too short or too fast, but I hope that anything Patrick has already said will help to make sense of my little contribution.
One minute clip: (download the clip if you like)
What I have added is perhaps the point that is different in your file compared to the content of the tutorial: The orientation of the image vs the cylindrical projection. I have solved it here with the Layer Shader>Transform. (However, my own workflow is typical to open the image in Photoshop and change the orientation there, so it is done and the handling in C4D is simpler.)
If I do not answer the question here, please let me know.
All the best