Since the hair start thinning when you get old, it is best to keep them short. Also since you have a small oval face, a short haircut would help in making it look bigger. I would suggest a short haircut in layers. There must be bangs at the front which would help in hiding the size of your face and would make you look younger. Here is a link for more hairstyles for over 60 women:
www.hairboutique.com
www.hairboutique.com