At 6 months after rhinoplasty it is appropriate to use filler to augment areas to recreate the appearance you liked when it was still swollen. There are limits to what you can do with an injection; in general, fillers work best to contour the nasal dorsum. As you may have been told, you are likely to see further change in your nose as swelling continues to go down, which some would argue is a reason to start with a temporary filler. Radiesse, like hyaluronic acid (HA) fillers (i.e. restylane and juvederm), is temporary but in contrast to radiesse the HA fillers can be dissolved. If you are starting at this point with an injectable filler I would recommend something that is more easily reversed such as an HA filler. Depending on how the nose looks as swelling continues to subside, and how effective the fillers are in making the desired correction, you can ultimately use a permanent filling material to obtain similar results.