Aww, thanks! I’ve actually been working a lot on Detective Pony recently, and I’ve just started chapter 6. (Now that my Fall semester is ending, I anticipate having more time to work on it (and other projects for this blog), and maybe finish it before the year’s end.)
But anyway, suggestions. For the next few chapters after Hussie’s edits, I just went on in the same style, editing parts of sentences to make them nonsensical/more profane/otherwise funny. If you want, feel free to use anything you want from what I’ve already posted.
After two chapters of that, I started nudging the book towards an entirely new plot, involving all the same characters, but totally different in content and tone from the original text. I had these running parallel for a while, but eventually, I had the new plot grow proportionally larger and eventually entirely overtake the original.
Remember, “Later, about halfway through the book, rather than see the gag through to the bitter end, Strider began pasting over entire pages of original text with his own completely rewritten version of the story, while keeping all the chapter titles. His revision is a tough, emotionally draining read. But it’s cathartic, in all the worst ways possible.” So the end goal is to totally replace the original text with your own. Right now in my process, I’m near the tipping point where my text takes up more of the page than the original text. It’s the opposite of the beginning: I’m telling my story, with a line of the original here and there to help it along or add humor by taking it out of context. I’ve already had a couple pages entirely replaced with my stuff, and they’re coming more and more frequently.
Or, of course, you could go a less intense route. If the goal is just to give your friend something amusing and you don’t want to spend hours and hours on it, you could just put a couple text edits on each page, and maybe a few funny drawings. You could take as your model the Wizardology book or the book about the first flight around the world that Hussie himself defaced (Detective Pony itself is a reference to these). In other words, you could comment on the text without entering into conversation with it. If there’s some kind of edit every couple of pages, it’ll be clear that you put a lot of work into it, and it’ll be a great gift.
But if you want to go all-out, I’d suggest first deciding what you want your story to be once you start replacing entire pages, then find ways to work towards that. If you want to see what I’ve done so far and use some of that, let me know, and I’ll send it to you. I’d prefer not to put it out there publicly until I’ve finished the whole thing, but I’d be happy to share it with you if you think it’ll help you. Good luck!