Hi All, New to the forum, have been watching Marks videos for awhile. i am in the process of setting up some new pots and garden beds, i have a heap of usable cardboard. Question is, what is the best way to use it to build a better soil. I know (i hope) cardboard is the Carbon, while green leaves etc are nitrogen so should i layer this a few times in a new pot or garden before adding the top soil? as an example in a large pot could i build the first 1/2 cardboard and green clippings layer by layer for the first 1/2 then use a good potting mix to top it off. will this be a good thing or waste of time. Thanks.