1 I'm going to show you how to add a reflection to your picture and make it look really cool. First thing you need to do it duplicate the layer with your picture on it.
2 Go to Layer >> Duplicate layer then go to Edit >> Transform >> Flip Vertical. Now move your new layer with your copied picture down to make it look like double images. Like the image to you right.
3 Create a new layer, Now put white as your foreground color and select the gradient tool with a gradient of Foreground to Transparent. Now start in the middle of your copied picture and go to almost the top. See the red line over to your right in the step 3 picture.
4 Hit Ctrl+E once to make your Gradient layer and your copied picture layer one. Now just change the layer Opacity to about 40% and you should have a image like mine with a nice reflection of that image.