You can find a tutorial to make it here: http://photoshoptutorials.ws/photoshop-tutorials/photo-manipulation/create-a-floating-island-scene-similar-to-james-camerons-avatar.html
Background: Cat-in-the-Stock (http://cat-in-the-stock.deviantart.com/ ... 3-58319753)
Islands: meihua-stock (http://meihua-stock.deviantart.com/art/ ... 2-62499768)
Sky: cubstock (http://cubstock.deviantart.com/art/fiel ... s-65159332)
Birds: sd-stock (http://sd-stock.deviantart.com/art/Bird ... stock&qo=6)
