The author of ten published novels, I have over fifteen years proofreading and editing experience. In that time, I have worked with all kinds of different writers - from first-time authors to the far more established - writing in all kinds of different genres: literary, sci-fi, fantasy, children's, thriller, romance, etc.
In terms of my working practices, I typically proof a manuscript in three stages. Firstly, a basic read-through to eliminate any typos, grammatical lapses, the repetition of words/phrases, etc. Secondly, a more developmental proof focusing on the plot, pacing, character arcs/development, etc. And thirdly, a final check through to ensure that your 50K novel has that essential professional polish.
In addition, I will provide an interim assessment within 24 hours of receipt (the opening chapters), just to let you know what and if has jumped out at me so far - my initial impressions of your writing. I will also be happy to provide any advice I can on the publishing industry - in terms of writing a synopsis or the publishing options available, whether you're looking to go the self-publishing route or query agents/publishers direct.
I use Track Chages in Word, can make a start right away, and would have no problems filling out a questionnaire or chatting about the book in more detail.
I look forward to hearing from you.