Etiquette in asking for funding proposal example
First: Good approach to looking at successful proposals first. You cannot write a winning proposal if you don't know how winning proposals look like.

Second: Most people will probably be loath to share their proposals with anyone they don't know. But at the same time, most professors will (or at least should!) share their proposals with those they mentor in one way or the other. In fact, they may also take the time to walk you through the process, look over your proposal, give you feedback, etc. So ask your superiors, your department head, or others in similar position who look after your career development to help you with proposals that have been funded.