I would not think that nose hair is a good donor site. It would be difficult to harvest and there are better donor sites in the scalp. Eyebrow transplants using scalp hair requires a special skill in identifying the ‘bend’; that is natural in each transplanted hair. So when put in by the surgical team, the natural curve of the hair must be placed to take advantage of it as it is placed. It also must be put in laying them flat consistent with your natural eyebrow hairs Too many surgeons without considerable experience can’t seem to get either of these techniques right and if they don’t the eyebrow stick out rather than lay flat as they should. In your case the darker hair and a slightly bushier eyebrow might help you frame your face, but of course, it is your call 100% as to what you want to look like.