Uneven nostrils and rounded tip. Any suggestions?

The decision to undergo a revision rhinoplasty is one that should be taken with great consideration.  Minor nostril asymmetries, especially on the base view, should not be a reason to undergo a revision.  If the incision bothers you, a scar revision might be considered, but even that is "iffy."  Sometimes, there is still some minor swelling the area just above the tip, even after a year.  In those cases, a kenalog (steroid) injection can be of some help.  Speak to your surgeon about this.  Best wishes.

Without pre-op photos and the benefit of physical exam- it's difficult to give you the best answer. Your current nostril asymmetry is not significant enough in my opinion to merit any major surgical intervention. Be aware of the fact that the human body is not a mirror image of itself and that inherent asymmetry to some degree applies to the nose.