I'm not one to ask many questions, but I have tried to do this technique a million times, have searched high and low in the memories, but to my frustration, I still do not understand how to do this.
I would like to use thse mirror brushes, made by the talented scarsonchest


to make icons such as the example she gave... see here.


I figured at first it was like using the decorative mask brushes, but... no.
I am using photoshop 7.
Can someone give me a simple technique to achiving this look, or point me in the right direction?

Thank you in advance.