And much more. Do you even have the slightest idea what you're doing? You're also missing stuff like quotation marks and formatting in many places, which is screwing the entire thing.
I use Pixlr E (a previous comment mentioned Pixlr X, but that's the "easy" version, it's got far fewer features and stuff). While it's technically for photo editing, it can do pixel art/MC texturing just fine. Also, it's online (in a web browser, no downloaded software), free, and you don't need an account.
"Warden" doesn't meen "keeper", no idea where you got that from. It's its own word, I'd say the closest synonym would be "guardian" or "protector". And it's pretty obvious it just wards (guards) the deep dark, as they literally stated its main job is just to hunt down all that enter.
I use those all of the time, especially in Creative builds. Andesite looks great in caves (especially with other stone-colored blocks like cobblestone and clay), granite can make brick walls look worn, and I've used diorite in zillions of buildings and stuff, especially medieval ones.
Minecraft was "completed" in 2011. It's now getting updates, which is different than "still working on the final game." Again, said "final game" has been out for almost 10 years.
You could do it without a data pack by just doing /time set night. That would change it to night (which is kind of obvious), so you can do that and instantly click the bed.