For one face I would assign a shading domain to that one domain and use the UV in Carrara to place the texture map on just that face. You'll have to assign the shading domain first, go into the UV editor, save a large template of the uv out of the editor, use Photoshop (or whatever) to paint on the artwork, then take it back into Carrara as a texture map on just that shading domain. That is how I'd try it. R

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