I have recently started offering logos/watermarks in my Etsy shop and have found that the easiest way to watermark photos is to turn the PNG file into a brush in Photoshop or Photoshop Elements. This is very easy to do once you have the PNG file.
The first step is to start with PNG file that has a transparent background. I have found that the brush works best if your words and images are black. If you purchase a logo/watermark from me, this file will be included in your purchase.
Here is what I have been working on for my new watermark:
The next step is to go to your brush tool and then pick which brush category you want your new brush added to. Whichever one is active is the one that your brush will be added to. I have mine in Untitled Brushes.
Next go to the Edit menu and click on Define Brush...
Then you will name your brush.
Click OK. When you click on your brushes, you will see your new brush added to the bottom.
The last step is to save this brush so that you can find it the next time you need to watermark a photo. To do this, click on the double arrows to the right of your brushes and click on Save Brushes...
That's it! You have a new brush to make watermarking your photos easy and because it is a brush, you can make it whatever color you want! Here is a look at my new watermark in action!
If you have any questions, please feel free to ask!