1, ps first. Open the picture you want to sharpen. Sharpening can be done as a whole or as needed.

2. Double-click to unlock the background. In the unlocked background layer, use the polygonal lasso tool to dig out the parts that need sharpening.

3. After deduction, use the shortcut key ctrl+j to copy the layer.

4. Select the copied layer and start sharpening. Filter-Sharpen-Smart Sharpen.

5. In intelligent sharpening, adjusting the radius can preview the sharpening effect, thus achieving a reasonable effect.