If you'd like to find photos of Amy to use for making banners, and avatars, you can visit her website at
www.amyrivard.com and also, I believe if you ask around on the Celtic Woman forum, people there would be happy to help you also.
And as well..... you could also ask Amy's biggest fan and supporter, Cap'n Davey, who is a member of this forum and a great contributor of everything Amy related.