I recommend you to install the free software GIMP 2 to the computer and play around with the options in the "Filters" menu.
for example:
You are viewing a single comment's thread from:
I recommend you to install the free software GIMP 2 to the computer and play around with the options in the "Filters" menu.
for example:
Or, IrfanView program (more lightweight), and menu: Image/Effects