Hello Joybells
You may already know this, however, go to the site
www.cabincrew.staffcv.com You can apply online with several airlines in Oz (and overseas if you are able to).
Better be quick with Jetstar, as they have been interviewing this week for certain bases.
Do not let age put you off whatsoever darling. A couple of lassies just recently got in with Australian in CNS who were late 40's and early 50's. Go girls I say
So long as you have a brilliant Customer Service type background and you meet the individual requirements, there is nothing to hold you back. Just bear in mind, all the Oz airlines will require you to have a current passport (with no restrictions), RSA Cetificate and First Aid Certificate.
All the best hun.....go get 'em
Luv "Pants" x