hi are you retraining to be a teacher?
i retrained about 4 years ago. it is the best thing i ever did. i love it. i am teaching year 2 this year. when i was training i had a brilliant mentor and learnt so much.
your lesson sounds fine. just remember to keep the lesson well paced. lots of them doing/talking not to much of just you talking (one of my early mistakes)
be confident ! don't expect to get things right all the time - self evaluation of lessons is very helpful.
if you need any help with anything just post on mumsnet i am usually on most nights.