Firstly, I'll ask about what topic areas you are struggling with most, then we will go through questions on a topic together and I'll show you all the small tricks you should know to help you finish the question faster. Once I believe you are starting to understand the method for answering these questions, I'll give you some questions to complete. In between sessions, if you wish, I will give you more of these questions to go over so that you won't forget the method for completing them before the next session.
I've had experience tutoring people before, such as other teenagers in my school who were struggling with Maths. Also as I have just sat the exams myself, I know all the different topics and every trick to help you finish questions on the topics faster.