Below is an example from a thesis, still in preparation. I was sent a draft of the first chapter and made several alterations and suggestions. When the Introduction arrived, it was clear that its tone was very different. Consistency in presentation is key, so, after a brief discussion with the client, I set about editing the piece quite heavily, in order to give it a more 'professional' feel. This is just the first page. Because it is the client's work, it is his choice, whether to accept the edits that are made. On the left is the original. On the right is the edited version.