native English speaker - workshop animation for children

I am looking for a native English speaker to animate workshop. The workshop objective is to give an "Initiation to English" to children (18 month to 3 year-old, group of 4-10 children coming with their parents). You do not have to be a certified English teacher, as long as the approach is fun and creative (e.g. could be an artist, musician). This workshop lasts 1 hour, on Saturday, twice a month, all along the school year. It is a permanent job (from 04/10/14 to June 2015). It is based south of Paris (Issy les Moulineaux).