The original question and all of the responses seem to be trying to create a new texture by various techniques, with varying degrees of automation.

Perhaps the question as given was misleading. Do you really want a new texture or do you want a way to create the effect in Poser, with no work?

I did this combination of existing V4 skin texture and a grass texture I got off the web without making any new texture - just a couple extra nodes in the material room. There are no seams, and I can instantly replace the skin with any other skin, or the grass with any other modifier texture.

Of course, if you really want to make a new texture then proceed with using other tools as previously described.

My technique is this: Load another image in an Image_Map. (Tileable images are best) Set the texture strength to about .7 (adjust as desired) to fade it. Change the Texture_Coords to XY. Change the U_Scale and V_Scale as you see fit - I used 800. To flip vertically use -800 in the V_Scale. You can "move" the image around on the figure using U_Offset and V_Offset - requires experimentation.

Then you combine the original skin with this overlay using a Color_Math node set to Multiply - set both inputs to white - connect the two images to the Color_Math.

Then the Color_Math, which has the combination texture, goes where the original skin texture used to go.

Of course, I did not do this by hand - instead I wrote a script to do it for all the skin zones. Depending on your skills at programming that may be impossible or trivial. SnarlyGribbly may come along and add this feature to EZSkin in which case you can do this with a mouse click.

---

Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)