If you'd prefer the "roll your own" route, this is an example of something that's ridiculously easy in a software with 3d painting capabilities. It's a lot easier because it's what you see is what you get.

I use Mudbox for this kind of thing. It's UDIM by default so it handles LF, and I'm assuming Dawn. V4 requires a bit more prep due to the stacked UVs.

Here I just imported LF, steady stroked 2 curves onto her legs via symmetry, and stroked the paint brush to the curves. Via the paint layers, export channel to psd. This opens the layer in photoshop for any other manipulations as desired and can be sent back to Mudbox or just saved out as a file. It's basically 5 minutes of work.

Mudbox is 10 dollars a month subscription from (ominous music) Autodesk, which I suppose is horrifying for some, but it's a very capable sculpting and painting tool that easily integrates with Photoshop and Poser. For straight layer based 3d painting, and many baking operations, it puts Blender to shame...