Unfortunately, I am not appreciating what you are concerned about; sometimes photos don't do justice and a physical examination is necessary; the columella can be altered to look like any shape that you want.
Can my columella be partially restored?
From the photos it appears the surgeon did a overall good job of straightening the nose. A graft could be used to produce a little more columella show.
Your nostrils are flared but these limited pictures do not demonstrate problems with tip rotation or columellar position. A complete set of pictures for nasal evaluation as described on my website may be helpful. When did you have the surgery?
Thank you for the photos and I would discuss your concerns with your surgeon but from what I can see he has done a very good job improving the appearance of your nose. But can the columella be lowered YES