Was the texture touching the sides of the window frame NN? Rule of thumb to get a hole is negative on the slider and to ensure it the border is either a solid line color all around or transparent. Since these distorts work with circles you want the inner part to be round to avoid problems in this case as well. Its also a fair amount of trial and error to find textures that can handle being compressed and distorted.
Example of starting texture that doesn't quite work, but I chose something with this in mind:

Example of just turning it into a torus without highlights after processing it with vignette to create a black border and save me a step of back-lighting it:

Then a quick vignette to make a circle out of it plus the highlight blend and highlight layer creation (also because I rushed and forgot to show what it was like before the previous example):

Transformed with highlight and tiny amount of radial blur on the torus layer as it picked up some moire pattern in the inversion:

Transformed with highlight, then white balance to color it to a blue lighting effect:

Pretty fair example (I hope) of how it doesn't always work well with some things ... I can easily see how it wouldn't "grain" well without some more work due to the starting texture. Mainly point I had was to show that its "wee bit" glossy only since it has highlights to start with. To get more from it I think it would probably need maybe curves and such to bring back out the depth before applying the highlight.
Main thing is seeing how to radial blur a highlight on a torus for me. Thanks WB.
Edited by delpart, 13 January 2012 - 10:48 PM.