The following links provide advice and examples to help you edit your writing for the tone and style appropriate to academic documents.
EDITING FOR CONCISENESS: KISS Those Sentences
EDITING FOR CLARITY: Write to EXpress, not to IMpress
EDITING FOR CONSISTENCY: Help Your Ideas Flow
EDITING FOR FORMALITY: Find Your Academic Voice
EDITING FOR MODIFIERS: Excuse Me, But I'm Afraid Your As is Dangling