The key to this project is correct usage or layers. Don't worry, Photoshop takes a while to learn and I'll admit it has been frustrating at times. But don't worry, you'll get it. Feel free to ask if you don't.
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www.fullaperture.org will have threaded discussions and FAQ to make it easier to learn and teach.
*Disable your original layer after you duplicate it at the begining of this tutorial.
*Remember the layer you are removing the background from is y