It's good stuff kenmo. Neat to see you over here in this forum too. You can also reverse engineer some stuff by looking at the existing presets. A lot of times, I find myself using one that's close and then tweak one or two channels to get what I want. (Old habit from Brycing too.) But there are still a lot of novel things that can be done in those textures which aren't really demonstrated in the standard presets. Sometimes you learn about those by examining downloaded materials to see how they did it.

Also if you have a particular specific thing to figure out, MarkBremmer and GKDantas here tend to really know their stuff. (There may be some others that pop in every now and then, but those two seem to be the main Carrara pros at R'osity.)

Also that two versions old Carrara from the mag is actually good. The more recent versions seem to be about fixing some bugs, integrating characters better ("Poser/Vicky" stuff), and adding things that deal with hair or Carrara's built in modeler. There might also be some novel plugin capabilities added, but I haven't really looked into that. If you're not too worried about those, the mag version is plenty full featured and capable of excellence.

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.