The group should determine what it wants to do in the terms of goals and outcomes. Very often, groups make the mistake of identifying goals as what will be done, rather than the real goal. Creating signage for a nature trail is not a goal, but a means of accomplishing the goal of having good signage along the nature trail. Goals are the end result of what the group will do. And goals have outcomes.
Outcomes drive the goals.
The outcome might be that there is improved probability that users of the nature trail will understand what they are observing. Another outcome might be the availability of information along the trail that is not visually disruptive or that blends into the environment. Agreement within the group on goals and outcomes of the project is important before the group even begins to look for funding opportunities. The extensiveness of the project must be determined before asking for funding. Few, if any, foundations will award money to fund a project where the group requesting the funding does not do any of the work.