It's a good start. As you master that, then you can move to the next step.

With a texture I created, I worked from an underlying merchant resource to eliminate seams. Then I basically covered everything with photo pastes, but the effect was subtle because I used the eraser (partially transparent) a lot.

Technically, the very best textures are not created from photos (unless they are high-priced body scans where light glares and shadows are virtually eliminated, but those are hard to come by). The most real CG images you'll see were hand-painted, believe it or not. But not very many people in the world of Poser have that kind of skill, I don't think.

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3