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.
In this interesting Photoshop tutorial I will show you how to move, rotate, resize and overlap individual letters, numbers and other characters in text.
A bit longer Photoshop tutorial, but still very suitable for beginners, where you will learn how to carve a random text into human skin from scratch and make it look realistic.
