First, you have to install Adobe Photoshop CS3/6 or higher version in your laptop or PC, I recommend free software apps from Softonic, google (synonymous to ‘search’), it.
Open the application.
If you wanted to set the image size before you start, go to toolbars, click ‘IMAGE’ then on the dropdown menu choose ‘IMAGE SIZE’ then proceed to ‘DOCUMENT SIZE. The common values for images (available on Photo-developing Studios) are:
2 x 3 inches (3R photo size)
5 x 7 inches
8 x 10 inches
Just interchange the width and height sizes per inch to work for a ‘Portrait’ orientation photo. This is important as NOT to distort image upon developing if your desired size is not met for the photo
1. Go to the toolbars on TOP and click ‘FILE’ then choose ‘OPEN’. Browse on the image/picture you wanted to modify.