Any iPhone apps like Photoshop? Where I can cut an image in to another image?

I'm super obsessed with Jennifer Lawrence and everyone knows that and it's kinda a big joke with me and my friends so I wanted to cut myslef in to an image of jenny blowing a kiss at someone and captioning it "the bae loves me." I can't find any apps like that. Does anyone know any?

PS Touch

Download photoshop for iphone from this link-
http://www.tomsguide.com/us/download/Adobe-Photoshop-Express,0301-32471.html

I have known it.

Typically that type of stuff is done on a computer, you can't do professional work on a phone screen.