We regularly preach the necessity of taking a cautious approach when it comes to post- processing. After all, your goal is to enhance an image with subtlety, rather than make it worse with heavy-handed adjustments that result in "overcooked" results. Sharpening, or rather over-sharpening, is a common occurrence that falls into the category of errors that quickly deliver "crunchy" photos and reveal your lack of Photoshop or Lightroom skills. Do things properly and you'll improve a soft image. But take things too far and you've just killed an otherwise nice shot.