Here are some basic guidelines to include in your rules:
Include who is eligible to enter your raffle. Any age requirements or resident requirements.
Include the Start and End date of your raffle.
Include the Drawing date and time and how the winner(s) will be chosen.
Include prize information, such as the value, where it will be picked up or delivery options.
Include tax and or title obligations if applicable. Like for a car, the winner is responsible to insurance, tax and title.
Include any restrictions or requirements on certain prizes. For example, a Nascar driving experience winner must be 18 or over with a valid drivers license or if there is wine in a basket raffle prize, that the winner must be 21 and show valid id to pick up the prize.
Include how to get a free entry if your area requires that. Chance2Win does not include an online free entry method and most organizations say that a self addressed stamped envelope must be mailed between xx date and yy date for a free entry. One per envelope and household, etc.
Include what the purpose is of the contributions for your raffle and how they will be used. Such as new uniforms for the school team.