Breast Lift of Good Breast After Unilateral Mastectomy?

Achieving a good breast reconstruction is more similar to completing a work of art. There is no formula or recipe or definitive step by step process.
Some of these appraoches have been discussed.
It is difficult with any implant breast reconstruction to achieve a natural "droop" to the breast. Despite the best of our intentions, the implant reconstructed breast tends to have a full non-sagging appearance.
To this end, knowing that the left will have a full appearance with a relatively high riding nipple, performing a crescent lift on the normal side is a reasonable option.

Thank you for the question and the photo...I hope that these answers will assist in your decision.  A surgical procedure on the contralateral (opposite) breast is a very common thing to do for women who have a mastectomy on one side only.  It is not uncommon to have asymmetry following the mastectomy, for which a mastopexy (breast lift) or an implant would do well to correct the issue.  Both of these are relatively similar procedures, but very effective for this problem.

Looking at your photo, it appears that your right nipple is at an adequate position and would require a very small breast lift, if any.  If you were to have an implant-based reconstruction, your reconstructed breast would be more perky, fuller, and rounder than your unaffected breast.  Often times when an implant is chosen for the reconstructed breast, I recommend placing a small implant, just to give a more symmetric appearance by use of the implant and give those aforementioned properties.  I would say that this may be the better option for your case.  A discussion regarding the options with your plastic surgeon should include all of these and together you should make the decision for which option, if any, is best for you.  Good luck!

A crescent lift is  a reasonable option for small adjustments of the nipple areolar positon.

However the timing would be best to first have the implant placement following tissue expansion, then let things settle down for some months. At that time a crescent balancing mastopexy (lift) can be performed if needed - often times as an office procedure under local anesthesia and/or IV sedation.