Let's follow with the tutorial... Did you 
                    have a good cup or coffee or tea??? :)
                  When you've merged the two layers, copy the 
                    merged layer and paste as new image. You'll see the cutout 
                    image without background. So, go to File/Export/PNG Optimizer, 
                    and use these settings to get the best quality:
                  
                   
                
                
                  If you are working with Photoshop, go to File/Save 
                    for Web, and see what to do
                  
                  Note: The .png is very useful 
                    not only for cutout images; you can save and keep all kind 
                    of works you plan to use later as part of another graphic; 
                    in fact, as PSD files are really big, when I do a Photoshop 
                    interface, I use to keep the "skeleton" in .png.
                  Try this, and you'll see how easy is to find 
                    your wanted file using the usual preview, with the Windows 
                    visor!!!
                  
                  Page 1 
                  