Rosie: I've no idea what you are doing and I haven't played with this myself. I have got an idea that's been on the back-burner for years now. That was to put a metal/machanical skelton inside a big cat/tiger and use the x-ray mats to illustrate it.

I'd concentrate on getting this right in Bryce rather than messing about in ps to begin with......;-(
Sorry I can't be more help.

Available on Amazon for the Kindle E-Reader

All the Woes of a World by Jonathan Icknield aka The Bryster

And in my final hours - I would cling rather to the tattooed hand of kindness - than the unblemished hand of hate...