You can impress the examiner with some more complicated grammar and vocabulary. Use a range of infinitive forms ("she seems to be studying" or "they seem to have had an accident" such as in the photo comparison, conditionals, passives and phrasal verbs.
Expand your ideas and speak without too many pauses. For the photo comparison try to give two or three comparisons before you go on to the second part of the photo question (how the people are feeling, for example.)
Use linking words and phrases. Words like "this" and "it" help you avoid repeating the same words; "while", "whereas", "however" help you compare photos; and "firstly", "secondly" etc help you to build an argument in the conversation part.
If your partner is finding Part 3 difficult, take the initiative. You can use phrases like "So do you mean…?" or "So do you think this is a good idea?" Use summarising phrases to finish part 3: "So to summarise…", "So in conclusion…"
Conversation tip: During the exam (and especially part 4) try and relate what you say to what your partner has said. For example, "Like Sara, I think that…"
