A very simple way to create a watermark brush using Photoshop.
1. Start with a new document: [File--> New] with a width and height of 300 (it doesn’t really matter) and a transparent background.
2. Click on the Text tool, then choose your text. For this example, I used GeoSansLight and Cobalt. Use black for the text, you’ll be able to change it to any color later. If you want a copyright symbol, on a MAC: hold down ALT + G. PC: CTRL + ALT + C
3. When you’re done arranging your text, flatten the image. Layer –>Flatten Image
4. Here’s where you make your brush. Edit –>Define Brush Preset.
5. Name your brush.
6. Click on the Brush tool on your toolbar. Click on the drop down arrow at the top of your screen. This will show you all of your brushes. Your new watermark brush will be at the bottom.
7. That’s it! You’ve created a watermark brush. Use the bracket keys on your keyboard, [ ], to resize your brush. You can change the color of the watermark by clicking on the color palette. Just “stamp” it on any image to watermark!