You need to build it in Designer to create those sorts of controls. If you don't want to do that, you could put it at the bottom of your layer stack where it won't affect anything else, do your contrast etc then use an anchor point to slot it in where you need it.
"Stack map" which is a texture where the R is something, G something else, B something else, and A something else. I'm sure there is a ton of other terms for this.
with that much detail in the sculpt , I'd expect there to be quite a difference so there's got to be something else going on. might be worth uploading some pictures of the bakes / renders
several. Best is you would try to debug your script yourself error by error.. As a start: the first error tells you that the 'else' statement is in a wrong place .. and that is because it must follow an if you can write: if ... then ... else ... or you can write: if ... then ( ... ... ... ) else ( ... ... ... ) but you can…