Gimp is a very powerful photo editing software just like Photoshop! Gimp allows you to apply watermarks on your artworks to stop people from stealing your artwork if you are posting them websites, blogs or on your personal pages!
To add a watermark:
Click on File,
Browse and open your digital art piece
Click on Layer and select New Layer
Name your new layer as “watermark”
Open layers palette, then click on Dialog
Deselect the digital art layer by clicking on the eye on the left (next to it)
Now Select the New layer
Select the paint bucket from your tool box
Paint the layer White
Select Text, “T” from the tool box
Select the black color for the text to type the copyright information on the digital art
Click on Filters > Distorts > Emboss
Select again your digital Layer and the watermark later,
Change text layer to “Hard Light” mode.
Change watermark layer to “Overlay” mode
Your text will appear on your digital art!
You will now have to save your new Image,
Select Flatten image
Then click on Export and select the size of your picture to 100