I have a watermark tutorial for you today and I want to show you how to layer a watermark on top of a photo using a free program called GIMP. If you are wanting a decent photo editing program, this is a good place to start - you can download it at http://www.gimp.org/.
When you open GIMP, this is what it looks like. It layers on top of your desktop.
First, you'll need to open your photograph as well as your watermark.
Select your watermark and you will see it in the layers bin on the right of your screen. Click on the watermark layer in the layers bin and drag it over your photograph.
The watermark will now be in the center (most likely) of your photo.
To move the watermark, click on the 'move' tool in the toolbox. I have it selected here.
Make sure the "move selected layer" button is marked and then click and drag your watermark to move it.
To make your watermark larger (or smaller), click on the 'scale' tool in the toolbox. I have it selected here.
Be sure to select the "keep aspect" button at the bottom of the toolbox and then click on the corner of your watermark. This dialog box will appear.
Click "Scale" in the dialog box once your watermark is at the size you like.
Go to File: Save. Be sure to select "Flatten Image" in the dialog box. Click 'Export'.
Now you can click "Save".
I hope you find this tutorial helpful.