You’re done! The story you have been working on for months has been double spaced and printed, your characters have succeeded or failed in achieving their goals, all plot holes have been filled, you’re good to go! Now… time to proof.
Let it sit
Reading the same lines over and over makes you oblivious to errors. Put the story in a drawer for a while. Come back to it with fresh eyes.
Print it out
You’ll be surprise how many mistakes you catch on paper that you missed on the screen.
Use large font
Maybe not for your novel, but the font size for your short stories can be increased to help enlarge your errors.
Read your work backwards
This will force you to look at each word individually.
Read it out loud
This is really helpful in terms of rhythm. Does your story have a variety of sentence lengths?