I frequently see composite pictures posted on photo critique sites that I am fairly sure are using parts that were not photographed by the person posting the composite.
Please be aware that if you do not have permission to use every piece of every image or portion of an image that you display or use publicly, you are in violation of copyright law.
Make all of your own composite components. Aside from copyright issues, I think a picture made using other people’s pictures is not really your own. Sole authorship matters.
