I used this picture as my background:
I also used this image for the hula dancer:
Then I used several pictures of flowers to put them behind the word "Hawaii."
I used this tutorial: http://veerle-v2.duoh.com/blog/comments/photoshop_vintage_effect/ for the background and the hula dancer to make the colors brighter and to make it pop. I made the whole poster using photoshop.