I can give u some ideas.
if its like ur dream is to become a pilot , then u can say that i will fly around the world like the wings of a bird.
i will fly around the mountains , i will fly around the sky , and i will watch out the beauty of this world.....
FIRST U CAN START WITH SOME QUOTES OF SOME FAMOUS PERSONALITIES . THEN WRITE ABOUT UR BEAUTIFUL DREAM.
HOPE THIS ANSWER CAN HELP U