Click on the image layer in the Layers palette . Select the move tool in the toolbar. Press the up arrow key on your keyboard 5-8 times to move the image up slightly. If you are working on an image which is much larger than mine, or which has a much higher resolution, you'll need to press the arrow key many more times. Use your best judgement.
Frames are always a little bit wider at the bottom than the top.
It looks better that way. Click the background layer in the Layers palette. Then click the New Layer button at the bottom of the palette. It's the icon that looks like a little page. Press Ctrl and click on the image layer's name.