I think about it off and on quite regularly and all the info, including how to go about it, is there to read and follow.

Make promo pieces like vids, website etc...
Have a reward tier for the levels of funding sought...
Build up your case and test it amongst your networks then submit if it seems like it would garner interest.

Then update regularly and keep in touch with all your supporters as this engenders 'word of mouth' advertising and promotion.

BUT above all, make comparisons with successful tenders and design along their briefs.

A big advantage is if you can get your own local media outlets interested enough to run an article about a local initiative (yours)...this is a key element as all western media travel trough the one route to get to your desktop or kitchen table as then global access could follow...

As mentioned above, a promo person is pre requisite.