I did mine on my daily routine in detail. I think its a good topic to do it on because the volcabulary is simple making it easier to pronounce and learn off. It's also proof that you really learned a lot because it covers all basic topics. You may even get extra marks for using reflexive verbs correctly. Another plus is that "Write about your daily routine" is a very common question in exams, so if that ever comes up you will already have your cba memorized, so you can just write that cery same thing! It's basically a matter of killing two birds with one stone.