Scar tissue formation? Do I need a revision?

If you are considering a revision, you should look at all aspects of the rhinoplasty, to see if there are other areas to improve. Don't let me talk you into anything, but to my eye, it looks like the tip of the nose could be elevated more, at the same time as trying to remove and prevent recurrence of the polly beak.
How *much* to elevate the tip, or make other changes? We figure that out with morphs, well before surgery. I'd love for you to see some excellent professionally-designed morphs of what could possibly be done with your nose. Morphs could also help you identify better just what's bothering you, and help you set a goal for the rhinoplasty that's accurate for your tastes. Profile and three-quarter views would be particularly important in morphing your nose. (Side note: in my opinion, morphs should really be done by the surgeon, or he should direct an assistant as she makes the morphs. Morphs should be made with a constant eye to what actually *can* be done in surgery, for that particular nose, and the surgeon has that information and judgment best.)

Finally, remember that rhinoplasty is an exquisitely difficult operation to get right, and you should only have surgery if you are able to make yourself very confident in your surgeon's skills. The changes that your nose needs require advanced techniques, and skill that most plastic surgeons don't possess with expertise. For most noses, it's much better to not have surgery than to have inexpertly-performed surgery. Read my essay on how to stay out of trouble while selecting a rhinoplasty surgeon. And it also discusses how to take photos that are best for online evaluations.

And for those who have had previous surgery, it also discusses how to tell whether your first surgeon should be performing your revision.

Hello! Thank you for your question.From the photos you provided your tip looks droopy and overprojected. Your nostrils are uneven. I recommend you a revision rhinoplasty surgery if you want to correct it. Anyway, overall it still looks great.
Best regards!Prof. Dr. Selcuk Inanli