Advice for Town Council: Policy Documents

For my sins, I have become a co-opted member of the town council, in Shepton Mallet. I did this mainly to try and push through a Declaration of Climate Emergency, and write a Green Charter (attached) for the town. I'm now involved with the Neighbourhood Plan, too. I have absolutely no experience in this capacity, but want to capitalise on this opportunity by trying to pass policy which would benefit people and place the most. We have planted a food forest, and dug out a wild pond, as well as plant some edible beds in the High Steet, but does any body have any advice when it comes to policy; I've contact the Somerset Wildlife Trust to help with the identification and protection of wildlife corridors in the area, and will put this info in the NP, is there anything else that I could perhaps be doing? The Green Charter - 7.1, food - any advice? Any help would be much appreciated.