I think this one would be quite a bit easier to describe in a video type screen capture, I hope to get started making those in not too long.

Thank you very much Michael !
This is a fantastic explanation .....
It would make a very good tutorial on how to use guides
to construct difficult shapes. I learned so much from you
with this mini tutorial . I will think of using guides more
for construction in the future.
Best regards
Peter

You're welcome Peter!

Yeah, the intersection snap makes a lot of accurate constructions possible, for creating stuff at particular angles, etc...

But often times the difficult part is figuring out exactly how to set up the stuff to intersect with each other though.

- Michael