i am writing a french essay tomorrow and i would really appreciate it

i am writing a french essay tomorrow and i would really appreciate it if i could have some help.
i am writing about something that is called the "big experience" which is a trip that my school does in year nine.
a little about it:
you choose a country and i went to fiji. you do community work and live with local host families in a village and just chill on the beach.
the most memorable part of my trip was getting stuck in the middle of the ocean on a really small boat with 4 other people and drivers we couldn't understand. we were driving from one island to the village and or big boat broke down and and so small water taxis had to pick us up. there were other boats, and we lost sight of those in about 5 Min's and it got dark and cold and the boat was filling up with water. the water was really rough and one of the waves was so big that when the boat came down, all of the seats in the boat broke. we didn't make it to the village we were supposed to go to, but stopped after about 3 hours of journey on another island and stayed with a different village for a night. it was the scariest night of my life.
if you could help me say any of that it would be great.
any tips are good especially tips about the past tense which is how this needs to be written.