1st step:
revise your vocabulary with the objective to score 50/50 in Paper 2 Section A.
Why?
Vocabulary is the key to building one's language capability. Without vocabulary, its hard to read, speak or even understand any text in Chinese. So the key skill to build to up your PSLE Chinese grade is to increase your vocabulary quickly.
How?
list down all the words one needed to learn for PSLE Chinese and learn each word in entirely. And learn 3-5 words daily so that it become a habit.
2nd step:
you have to read good compositions or textbooks and learn the key things in compo:-
A) storyline or story structure.
B) good nouns and good phrases.
3rd Step
It is to beat recitation and learn all the 7 topics in Oral conversations by heart.
And train in talking till you can say out topic relevant words like its your own.