It's not easy creating clothes, but you can buy existing clothing items here or elsewhere, then use your textures on them. there may be a problem with copyrights associated with pieces of cloth or items of clothing, but I have never understood how it works. however, it's apparent that the standard technique for doing realistic clothing items is to scan the original item in large pieces, then patch the scans together in photoshop. whether this is legal or not, I can't say (not a lawyer).