How can cut the head of one person and join it to anothers body

*if u read the previous posts then you can done it easily
* browse both the images
*select magnetic lasso tool. Mark the image as in fig 120

* press ctrl key and drag drop the image into anothers body
* as u see the fig 121, head is not fit to the body

*press V key, then press ctrl T, now resize the head as it has to fit on the body as shown in fig 122.

*similarly look at the picture 122a