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How good does the webcam have to be? I have this pretty old webcam back from around 2000-2003 that still works but the image quality isn't high quality.
You can try doing it the old fashioned way, using a tough, sharp needle and some cotton thread, as well as some patience. It may take a while, but you should get similar results. I don't exactly know how to sew well, but maybe some instructables on the site can help you out if you need it.