I will edit or proofread (or both) any written content of any length, whether it be fiction, technical writing, web content, etc. I typically use the Track Changes and Comments features in Word or Google Docs, but can work with whatever suits you best. For editing, I address structure, wording, and content issues with Comments and fix any grammar, spelling, or punctuation issues that I notice with Track Changes. I always go over my work a second time to ensure I haven't missed anything. For proofreading, I my focus is grammar, punctuation, and spelling. I do my first pass digitally, and print the document out for the second pass. I then apply any changes from the hard copy back onto the digital file. Again, this is all done with Track Changes so that you can see, and either accept or reject, all changes that I have made.