I like the architectural shots but that second one is great, standing under Saint Joan looking down, and the way half the photo is sunlit and the other half is the subway in shade - unique photo.
What I'd seen of caffenol seemed mostly brownish, which can be cool if someone wants that look; I hadn't realized it could turn out actually this B&W. These turned out great.
I'm trying to think if I've seen something the opposite more or less of SpotTone, that would cover dark marks; for some reason I'm thinking I have... but straight lines like that would probably be a nightmare to try to touch up. I did get not too long ago something called an Photo Art Etcher that was apparently made to scrape marks off negatives, or maybe to scrape off whatever dark part of an image you didn't want?? I haven't tried it on anything yet (but I'm sure I have something that didn't turn out great that I could experiment on!); haven't figured out what exactly I'd use it for but one of those things I'll find a use for eventually.