I won't write it for you but, what on earth reminds you of what you think heaven could be? For example, a sweet and cold chocolate ice cream cone on a hot summer day or being outside on a winter day for 4 hours playing in the snow and then going inside and taking a hot steamy shower. What are some examples that you can come up with that pieces of "heaven" are on earth? use them as reasons that support the topic ( the topic is what you posted). then just expand on those as much as you can, be very descriptive.