I'm in the middle of my story rewrites, but I haven't forgotten the editing.
Although I hadn't yet received a review, I had already started on the first chapter of qostoq's story from when he last posted. So I'm just going to post what I edited as an example/demonstration. Again, this is only line-editing. I'm not here to make the writing sound nice; I'm here to make them technically/grammatically correct, at least to the best of my abilities/discernment (hopefully didn't miss anything as I was pretty careful, but I'm human after all).
For instance, if you have "filler words," I'm not going to correct it unless they make the sentence incorrect. I'm also not going to help with vocabulary either, just spelling. These aspects and anything related to "style"is on the writer, not the proofreader/line-editor.
Anyway, here's the link to his first chapter: https://drive.google.com/open?id=1FoSSSJ6nFr6FE78lt9zUe2DYnhH9M8F4
For once, since Webnovel doesn't support proper italics/bold/underline, I used the formatting to show what I changed, and the entire chapter can be easily copied and pasted into Inkstone as is.
His story probably isn't the best example since it's almost entirely correct overall. (It still took me a fairly long time though, mostly due to the formatting to show the changes.) These are the kind of mistakes that writers who self-proofread probably miss lol.