Note: Learning how to select areas of an image is of primary importance-you must first select
    what  you want to affect. Once you've made a selection, only the area within the selection can be     edited. Area outside the selection are protected from change.

    Learn how to do the following:  

• Select parts of an image using a variety of tools.
• Deselect a selection.
• Move and duplicate a selection.
• Choose areas of an image based on proximity or color of pixels.
• Adjust a selection with the arrow keys.
• Add to and subtract from selections.
• Rotate, scale, and transform a selection.
• Combine selection tools.
• Use the clone stamp.

    In this Project we will be selecting Washington and Lincoln heads and swapping their locations.

                       

    **Before starting** ( Right click on the image above and save it to your computer/name it     RockFace/this name should be in place when you save it).

    Open Photoshop, go to File, >Open image called RockFace size of the image is 640 by 480.

    Using the Move ToolLeft click in the layers Palette and Drag the RockFace image to the create     new layer to make a copy of the image so if you make a mistake that can't be fixed you still have     the original image to deal with.

    Now that you have the RockFace image in Photoshop go to File >New and create a new window,     call it Face. Use Pixels, 200 for the width and 150 for the height. The Resolution is 72 pixels/inch     and the Mode is RGB color with a white background.
    Note: You can also make the copy of the head, by going to Layer>New>Layer via Copy(Ctrl+J)     instead of Dragging it to a new window, and it will be on its own layer.

               
     Now select the Lasso tool, I used the Magnetic lasso tool, but you could use just the lasso tool      which you drag to draw freehand what you want to select. The magnetic lasso tool uses      anchor points to the selection in place.

               Example of the Magnetic Lasso Tool selecting the head.

    Using one of the methods of Copying the selected head.  Now the selection is made, Drag it using      your Move tool to your Face image window that you created.

     Note: You will still have the original head in place it will not change, so you won't have an empty      space to deal with.

                       
    **  To Deselect the head on the original use Ctrl+D. **
    

      Now use the lasso tool to select Lincoln's head.

     Once Lincoln head is selected, keep the lasso tool activated. Right click inside of Lincoln's head      and Left click on Layer Via Copy. Now Lincoln's head copy is on it's own layer.

     Drag Lincoln's head onto Washington's head.

     When moving a selected area and it doesn't match, you may need to use Transform which is      located under Edit>Transform>scale or rotate (Ctrl+T) what ever you need to position it in to      place.

     Now use the Eraser tool to clean up and smooth out the top of Lincoln's head.

     Drag Washington's head onto Lincoln's original head.

     Place Washington's head where you feel it looks best.

     Once in place, The next process is to use the clone stamp. Click on clone tool stamp to      select it, place the stamp over the area that you want to clone,Press the Alt button and left click to      select the area. Once you have selected the area left click and paint the area you would like to      change and blend the area so it looks natural.