Beautiful! Glad to help.

Those jaggies are usually because your mask needs to be a higher resolution.

Or sometimes it can be because your min shading rate render setting isn't low enough. Try that first.

If you go the higher res path, you may end up with a huge mask, just for the forehead. This can be a resource hit that slows a render down badly. There is a solution, but it's a little tricky. I use this trick for decals and tatoos.

Instead of designing your mask and color map for the entire UV space, trim it down to only the part where the data is actually important. You then load these partial maps as usual, but you use scaling and offsets on the Image_Map nodes to size and position the trimmed map to cover just the area that is needed. You also have to turn off tiling for these.

For example, my little demo above is the lip mask for lipstick on the new Antonia figure. To get the fine detail needed on that tiny lip area, we needed to use a 4K by 4K map! That's a lot of data just for a few hundred white pixels. But by trimming it, I can have the same effective resolution of a giant mask, while actually only taking up a tiny amount of memory.

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