How to create and use clipping masks

Step 1: Find an image with some interesting texture.

I'm going to go with a grass background. Download the image here: http://www.flickr.com/photos/nebrow/3736422961/sizes/o/

Step 2: Add text to the image

Open the image in Photoshop and use the type tool and type some text on top of the image.

Step 3: Drag the text below the grass layer

Step 4: Create the clipping mask

With the grass layer selected go to Layer > Create Clipping Mask. The keyboard shortcut for this on a mac is Option+Apple+G.

And there we have it! Masked text! Now lets take this one step further by adding some detail and changing the color of the grass.

Step 5: Add a drop shadow

Add some nice shadow to the text by right clicking on the layer effects icon and adding a drop shadow.

Step 6: Add More Grass

Next lets duplicate the grass layer and drag it below the text layer.

Step 7: Change the color of the grass

With the top grass layer selected go to Image>Adjustments>Hue Saturation. The keyboard shortcut for this is Apple+U on a mac. I chose to make my grass purple in this case.

And there we have it... Purple grass!