I was playing around with photos with a teacher today and showing her how to do masking and Alpha masking. When you do the alpha masking you need a fairly plain background.
I used this photograph of my dog and then removed the background green of the grass by clicking on the Alpha button on the toolbar.
Then I dragged another photo of scenery (a photo I took at Cooks Beach) on top of the dog and sent the background to the back.
The next step was to click on the dog and change the Opacity so he looks ghostly.
I then went to View - Show Presenter notes and now students can write their stories about the picture.
Take a screen capture of the photo and add it to a Presentation in Google Docs. Make a file up different pictures.