Your argument says we know plants, rocks, planets are designed because it uses the mechanism inside the things that we design. We designed water bottles, what's the mechanism of a water bottle and how does it relate to the other things you claim god designed?
Why do you think a water bottle has a mechanism?
''Because it uses all the mechanisms inside the things that we design'' So a bottle can't be used to prove plants are designed by god, give me an example then of your claim.