definitely do a search on the forum. There have been many good points made in the past.

You may even find these articles helpful

http://www.xmarksthescot.com/page/articles.php

To be nervous and defensive to some degree is normal when just starting out in kilt wearing and or when you are the only one wearing a kilt.

Be encouraged, you are not alone. With the help of this forum you will become much more comfortable around people who feel they need to comment, and just as we have had to get used to wearing the kilt in our daily lives, the people around us have had to get used to it as well. We should be able to cut respectful people a bit of slack while they get used to it. The others, we can have a little fun with them Getting mad, or stressed over it is not worth it. The more you wear the kilt the more comfortable and confident you will become and that confidence will show to everyone around you and you will find that the ribbing and comments get fewer and fewer.

Be encouraged.