Hi - I'm happy to proofread your Excel document for you as I'm a professional English proofreader with extensive experience in linguistics and writing. Over the years, I've helped a lot of clients polish and refine their manuscripts (fiction and non-fiction), business documents, books, novels, novellas, ebooks, short stories, blog posts, articles, presentations, etc.
Besides ensuring a document is error free, I usually, if not always, opt to restructure or recast sentences for clarity and coherence, i.e. transitions between ideas. I also do some moderate and/or substantive editing, where necessary, to promote understanding, create parallelism and avoid awkwardness and ambiguity.
Also, I never discuss or distribute the contents of my potential projects but I may keep a copy of your document on file for a period of 48 hours in the event that you need further editing of future revisions.
PS. I hold a BA in English Language and Literature and currently teach TOEFL and IELTS.