Need help creating human textures

Hi everyone!
So I have created a chrackter (“Ria” Thread in the Work in Progress). At first I wanted to paint the body textures on my own, but then I decided to use realistic textures, but I was always wondering how to make such highres body textures for your 3d Charackter. What is the Workflow, where to I get images for texturing human chrackters (can be paid ones).
Every time I try to create body textures it just doesn’t look good … this is a topic where I always screw up … Can somebody help me with this?

Thanks in advance!

PS.: I hope this is the right place to post such a question.

3DSKis the go-to source for photographic human textures.

Thanks, this one I already know, but I would like to know the whole process of texturing… mine just don’t look good