The proposal would have to be tailored to each individual project. You could certainly cut/past some aspects but make the proposals personal.
Don't be a "yes" person. Don't offer the world when you may only be able to deliver 1/2 an acre.
Be polite, be very professional.
Here is the best article I have read on pitching for jobs:
http://www.sitepoint.com/article/guide-signed-contract
Good luck!