These are the basic templates I used for my CELTA course. I can't say if the lesson is any good, but these have the general headings you'll need. Remember to try to show a progression from controlled practice to free practice and always have feedback stages after any sort of exercise.
They really should have given you something like this though, ask your tutors. Anyway, hope this helps.
Celta Lesson Plans & Assignments 
Linear Mode
