ChubChub, often you will find for the first question the letter one if you use simple vocabulary (you can add more advanced vocab) you can gain high marks easily by developing and then moving on. Don't spend too long on that question - you can easily get 18 or 19/20 with little effort if you use the past, present and future and answer all the questions quickly for Question 1. Don't start on Q2. straight away, read slowly and plan for 2-3 minutes, this planning will save you a lot of time later on because you know exactly what to do next and won't babble, in my mocks 5 minutes of planning meant I could write a 150 word essay for Question 2 without having to stop and think a lot and finishing before time to check for mistakes.
Good luck and don't feel daunted by huge lists of what you must include, a few here are there will go a long way.