how can you edit photos on photoshop to look like this?

[paperdolls]

how can i make photos like this: http://www.facebook.com/photo.php?fbid=1496771628663&set=a.1338392749290.2039864.1515270988#!/album.php?fbid=1861279019763&id=1474571427&aid=2113459
any online tutorials or a good description you can suggest?
thanks