How risk is a second surgery to define tip and narrow bridge further?

As much as it seems to be a difficult situation you can easily improve it with an Alar rim graft on the right side.regardsDr.J

You have reasonable concerns about the appearance of your nose and you have waited an adequate time for healing to stabilize. For patients with average to thick nose skin, better tip definition may be obtained with a tip graft that increases the projection of the nose. Increasing projection...

With each subsequent surgery there will be more scar tissue and prolonged swelling.  I would advise getting a second opinion from a Board Certified Plastic Surgeon before undergoing a third rhinoplasty.

One of the biggest risks in Rhinoplasty is not achieving the outcome you desire.   Revision Rhinoplasty is inherently more complicated for a variety of reasons and the outcomes become somewhat less predictable.  The best advice I can give is that you need to see a Surgeon who is...

The plastic tube is likely an internal nasal splint and it is very common to form crusting and scabs on the surface of the splint. In general, this does not create a problem for splint removal- even if in close proximity to an incision. Any crusting and debris can be removed prior to splint...