Refer to this document for step by step instructions on creating a new KB Document.https://kb.wisc.edu/kbGuide/page.php?id=5235
If time allows, set your text aside for a few hours (or days) after you've finished composing, and then proofread it with fresh eyes. Rather than remember the perfect paper you meant to write, you're more likely to see what you've actually written.
Read through your text several times, concentrating first on sentence structures, then word choice, then spelling, and finally punctuation. As the saying goes, if you look for trouble, you're likely to find it.
In addition to reviewing for correct spelling and usage, make sure that all the information in your text is accurate.
Print out your text and review it line by line: rereading your work in a different format may help you catch errors that you previously missed.
Or better yet, ask a friend or colleague to read it aloud. You may hear a problem (a faulty verb ending, for example, or a missing word) that you haven't been able to see
The spellchecker can help you catch repeated words, reversed letters, and many other common errors--but it's certainly not goofproof.
Your spellchecker can tell you only if a word is a word, not if it's the right word. For instance, if you're not sure whether sand is in a desert or a dessert, visit the dictionary (or our Glossary of Commonly Confused Words).
Another way to catch spelling errors is to read backward, from right to left, starting with the last word in your text. Doing this will help you focus on individual words rather than sentences.
Keep a list of the types of mistakes you commonly make, and then refer to that list each time you proofread.
Invite someone else to proofread your text after you have reviewed it. A new set of eyes may immediately spot errors that you've overlooked.