Sounds like three very different ways of working with a muse, all with equally beautiful results.
I love that shot of your son Tread, I remember seeing lots of other shots of your son (all lovely). Muse is a great name to have, did you name him with the whole art thing in mind?
Ed, I have a non-physical muse too (quite reticent at the moment) but I'd love to have the other sort too, just for a while, to see how that feels.
Zoe, it sounds like you have the whole muse thing working well for you, it must be pretty intense to have that kind of relationship with someone...
Janet