BlendPic easily can blend your two photos.
You can make special photo using the app.
Please, you make special photo using your idea.
[HowTo]
step1) You choose two photos.
You choose photo from left icon and set it on front photo.
You choose photo from right icon and set it on back photo.
step2) You touch and shave front photo.
step3) You can share special photo by Facebook and Twitter and so on.