Dropping out a background with Photo Tool > Select Colors to Enhance

[Boy]

Thanks for the additional explanations.

[Egg Bramhill]

That's doing my head in at the moment Gary, I can see the effects but can't quite follow your method at present. I'll look at it in more detail tomorrow.

[gwpriester]

It will be my stereogram tomorrow on eyeTricks. There are a few important missing steps but A) I can't give away all my secrets, and B) these steps are more esoteric.