I offer a professional and personal proofreading and editing service. 

Proofreading is the last stage before publication or printing, so it's usually wise to keep alterations as minimal as possible. Instead of editing and making many changes, when proofreading I check for basic or obvious errors. I'd check the following:

• Grammar
• Spelling
• Formatting
• Word choice
• Sentence structure
• Style
• Consistency

The copyediting process is more involved and includes the basic proofreading as above, plus any elements of the following:

• Changes to sentences or paragraphs to clarify meaning
• Changes to the order of paragraphs
• Altering the layout of a document
• Changing the structure of the document

In reality most jobs are a combination of both proofreading and editing. 

Have a look in the gallery and you can see samples of these different approaches.