Adobe Photoshop CS6 comes with many great features, let me show you how to turn a daylight photo into a photo that looks like it's been taken at evening, sundown or at night with only a click.
If you don't want others to use your photos and images without your permission, you can create a so called custom watermark with your name or any other text you want.
First I will show you the easiest way in Photoshop to create even, concentric circles and after we will ad an inverted text to make it look hypnotic in a groovy kind of a way.