guy wires

I purchased and did initial styling on this nursery mugo about 1 month ago in early December 2024. I was so ready to style it (typical), I forgot to take a before picture! As a new member and totally obsessed bonsai hobbyist, I would love to participate if some1 gives me a pass for not including...

I don't think I see as much documentation about how to "guy wire" trees, and I think it's because the technique is on the more advanced side of things. So when should you use guy wiring techniques vs. regular wiring techniques? My impression is that you should use guy wires when the branches are...