I usually look for how a subject can be taught to a person, as everyone learns differently. I've already practiced teaching GCSEs.

How I teach is first targetting any weaker areas someone may have. After all, a student should have balanced knowledge of the whole topic due to how it is spread in question papers. What I do after that is go over the topic with the student. This allows me to see how much they know and correct any weaker areas they may not know they had. What I tgen focus on is their technique, how they write their answer and present them as GCSEs each have their own best way of writing.