If you can then do dance! Other than that just pick subjects you are interested in and ones that will get you onto the uni course you want to do. All you need to be a teacher is a C or above in Engish and Math GCSE and a good degree! Most teacher training courses require you to have at least two weeks recent experience working in a school, preferably in the subject you want to teach, but it has to be recent so I wouldn't worry about that just yet!