<p>There are several issues here.<br>
1. As Henry said, you shouldn't be taking portraits with a closeup lens because of distortion. Head-on you get big noses because the nose is closer. If you want to use more of the film then you could look for a telephoto attachment, not a closeup lens.<br>
2. The rolleinar set (or equivalent) does not do a perfect job -- even if the framing is approximately right, the angle at which you are viewing is different. That is, if you were trying to hide a double-chin, and were looking through the top lens, it might be hidden. But the lower lens might see it. Using a tripod and cranking the lens position up and down will "fix" this, but at substantial inconvenience, even with the device that Chauncey mentions. It works for a totally stationary subject, not so much for a portrait.<br>
3. It may be way more efficient to get a different camera, maybe with a zoom or mildly telephoto lens. A film 35mm SLR. A medium-format TLR with a telephoto lens is another possibility. I don't know if there are telephoto accessory lenses that you can use with your Ricoh; quality may suffer.</p>