This is how i add my watermark to my photos. There are lots of ways to do it though. I got my watermark from here
First go to http://www.getpaint.net/ and download. It is 100% free and safe.
Once downloaded find the photo you want to watermark and right click and open with paint.net. And you will get this:
Then you need to click Layers, Import file and find where you have saved your watermark, click it and open.
You will then have this:
Adjust the size and position of your watermark. Once happy with it click File and Save as
Save your image as a jpeg, click OK and you will have this:
Then you are done. Click the X to close the program and this will come up. Click Save. Then you are done!
This is what you will be able to open afterwards.
I hope that all makes sense, but if you do have any questions just email me or message me on Facebook x