I thought I would share with you the information I used to learn how to make a watermark for my photos.
It is here and actually uses photodraw, but the instructions are very easy to follow so you can adapt them to suit what ever program you have.
I usually make the watermark using fancy fonts and I save it separately to just copy and paste each time I want to add a watermark to a photo. It saves having to create a watermark each time. My current watermark is made using a free fonts downloaded from the web. One of them is a floral font. I just add text boxes with the individual images/font letter and arrange them until I am happy. I then group them as one image and adjust how transparent it is before saving as my watermark. Make sure the colour will show up on your photos. You don't want it too light or too dark.
Here is a site that explains how to add a watermark to your photos using word or photoshop,
and here is how to do one in a flikr account,
Lastly here is a video for visual learners.
Adding a watermark will not stop someone from copying your photos and claiming them as their own, (as has happened to me) but it will show who they belong to and hopefully prevent it. If you add your blog name too this will help.
I hope the links above help you add a watermark to your photos. If you find a really easy tutorial you would like to share I will add the link here. Just leave a comment below for me to check it out.
Have fun creating!