To start we opened the two images that we want to use.
We recommend naming each image by names or numbers so that it is easier to identify later. Now we go to the image of the face that we want to put And using the lasso tool we select the Contour of the face.
It doesn’t have to be a perfect Contour.Then with the control key plus C. We copy the selection and paste the selection.In the other image with Ctrl + V. Once the image is pasted with Ctrl + T. We adjust the size of the face that we paste so that it is.
Consistent with the face of the other subject In the event that the face Contour Pro truth too much. We can remove the edges with the Eraser tool.Now with the Ctrl key pressed we click on the face layer to make us.The election then we go to the image options Adjustments . And then click on Match cult.Blur in the match color option 
We selected source. Layer of the subject to which we
Changing the face and in the option called the layer we select the background.
Layer and see how the face becomes the same color as the other subject. Now, we duplicate the background layer with Ctrl + J. Again with control pressed. We click on the face layer. We go to select modify and click on content track and we put a value.
They were five and we see with his eyes. Reduces our selection
Keeping this election we go to the layer that we duplicate in with the backspace key. We eliminate the selected area. Now we select the duplicate layer and the face layer and we are going to edit it and click on auto blend layers.
In blind method select panorama And leave the option semen.
The stones and colors and content-aware fill transparent areas active. We see that we get an almost perfect mixing result to improve it. We will use the spot healing tool with the spot healing tool. We click in some areas where we see some imperfections if by clicking you get a result that you do not want. You can undo it by pressing Ctrl + z now. We just have to fix the imperfections and we will have our effect finished.