And by noticing someone's mistake, you might become more aware of your own.
My sharing pick today is EVERY DAY EDIT.
Every day Edit is an archive of short texts with 10 mistakes.
Choose one of the months and you'll get different texts to work with.
They offer the text with mistakes and another one with the corrections.
For tips on how to use this great resource, I recommend the reading of the wonderful post by Gary Hopkins with different activities for the same material. I guess that after working with these short texts on a regular basis, you can then invite students to correct writings made by their own classmates and themselves.
Do you have any other ideas for working with ERROR CORRECTION?