Hi there! I'm not sure what you're really going for here, I'm going to assume that you're trying to texture a mesh that you created using blender. Frankie (gruesim) made a really basic tutorial on this over here, jump to 14:59. I also recommend this tutorial if you already figured out how to bake things in blender.
Some other people may have better information, these are just basics. Hope it helps. Have a great day.
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