Sharpen Just Specific Parts of My Image?

There are three ways, and I covered one already on page 228 (using the Sharpen tool). But, this is probably the way I do it most often: Start by pressing Command-J (PC: Ctrl-J) to duplicate the Background layer, then apply your sharpening using whichever filter or method you like best. Now, press-and-hold the Option (PC: Alt) key, and click on the Add Layer Mask icon at the bottom of the Layers panel (it’s the third icon from the left). This adds a black layer mask over your sharpened duplicate layer. Get the Brush tool (B) from the Toolbox, choose a soft-edged brush from the Brush Picker up in the Options Bar, make sure your Foreground color is set to white, and then paint over any areas in your image you want to appear sharpened (I painted over her eyes, eyebrows, lips, hair, and jewelry above). As you paint, you’re painting sharpness. Another way do this is to go under the Filter menu and choose Camera Raw Filter. When the window appears, get the Adjustment Brush (K) from the toolbar at the top (it’s the third tool from the right). Then, in the Adjustment Brush panel on the right, click on the + (plus sign) button to the right of Sharpeness twice. This resets all the other sliders to zero and increases the Sharpeness amount to +50. Now, just paint over the areas you want to appear sharpened. Once you’ve done that, you can increase or decrease the amount of sharpening you applied to those areas using the Sharpness slider.