What could be done to further improve my nose?

Your nose will continue to change over the next several weeks to months.  Many times the issues you have discussed will resolve over this time period.  By 6-9 months, revisit these concerns with your surgeon; if you don't feel comfortable, I recommend consulting with an experienced revision rhinoplasty surgeon to review your options.

It is still too early to assess your outcome. Even though much of the swelling has come down by now you have a long way to go before you see the delicate refinements start to take shape. Often times the nose heals asymmetrically so one side of the nose may take longer than the other. Keep a positive attitude and good luck on your recovery.

I think that time will improve many of the issues you are mentioning. At three months, a majority of the swelling has improved but the small refinements will start to show up between now and the one year mark. If there are still specific things you are concerned about around 6 months post-op, I would meet with a few revision rhinoplasty surgeons and discuss further options. Best of luck