The first thing you have to do is to get all you're materials like a pen and some paper. Then you have to observe very well but write first in a scratch paper. Make sure that you observed right so you will know what you wrote is correct. If you are not yet satisfied with your observation you can always observe again.Then write your final conclusion in a clean piece of paper so other people will easily read your conclusion. And if you failed the first time, don't be afraid to try again. Hope I Helped! :)