Copy-editing and proofreading

Copy-editing and proofreading	Service
Yes	Spelling based on world trusted dictionaries	Language
yes	Grammar based on latest grammar references (esp. Practical English Usage by Michael Swan)
Yes	Punctuation
Yes	Appropriate use of words in texture
No	Sentences and paragraphs
No	Paraphrase even true sentences to more clarify the concept
Yes	Capitalization	Style
Yes	Abbreviations
No	References in one style
No	Following AMA style
No	Use of correct terminology	Terminology
Yes	Standard units of measurement	Terminology
No	Manuscript structure based on special journal instructions	Body structure and native English
No	Logical use of sentences in each part
Yes	Checking for sentences repetition
No	Correct and Preferred Usage
No	Non-English Words, Phrases and Accent Marks
No	Special services including 6-month editing warranty, writing cover letter, letter to editor, considering editors’ revisions, writing references in end note

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Description:

Be sure you've revised the larger aspects of your text. Don't make corrections at the sentence and word level if you still need to work on the focus, organization, and development of the whole paper, of sections, or of paragraphs.
Set your text aside for a while (15 minutes, a day, a week) between writing and proofing. Some distance from the text will help you see mistakes more easily.
Eliminate unnecessary words before looking for mistakes. See the writing center handout how to write clear, concise, direct sentences.
Know what to look for. From the comments of your professors or a writing center instructor on past papers, make a list of mistakes you need to watch for.

Work from a printout, not the computer screen. (But see below for computer functions that can help you find some kinds of mistakes.)
Read out loud. This is especially helpful for spotting run-on sentences, but you'll also hear other problems that you may not see when reading silently.
Use a blank sheet of paper to cover up the lines below the one you're reading. This technique keeps you from skipping ahead of possible mistakes.
Use the search function of the computer to find mistakes you're likely to make. Search for "it," for instance, if you confuse "its" and "it's;" for "-ing" if dangling modifiers are a problem; for opening parentheses or quote marks if you tend to leave out the closing ones.
If you tend to make many mistakes, check separately for each kind of error, moving from the most to the least important, and following whatever technique works best for you to identify that kind of mistake.
For instance, read through once (backwards, sentence by sentence) to check for fragments; read through again (forward) to be sure subjects and verbs agree, and again (perhaps using a computer search for "this," "it," and "they") to trace pronouns to antecedents.
End with a spelling check, using a computer spelling checker or reading backwards word by word.
But remember that a spelling checker won't catch mistakes with homonyms (e.g., "they're," "their," "there") or certain typos (like "he" for "the").