Me again. While the 3 groups here: Storytelling in Education; Youth, Educators, Storytellers Alliance; and International Storytelling can all be found by clicking on Groups at the top of your page here, the other 2 sites didn't show up when I clicked the link icon here.
There are several groups likely to be of interest to you in your teaching of English by storytelling. One such group is certainly Storytelling in Education, but you may also find Youth, Educators, Storytellers Alliance of interest. I'm the webmaster for this group at . It is a Special Interest Group of National Storytelling Network here in the U.S., but you can always go to the Y.E.S. website to see the many ideas there as well as here.
You may also find useful links on the N.S.N. website at . N.S.N. has some international members, but here there are certainly many international members, including the group, International Storytelling. As more interest in specific regions grow, there are groups forming to network on the needs and resources of those areas.
Whatever amount of participation you choose, I'm sure you will find this a good place to increase your storytelling. Indonesia's folklore is so rich that it is good to have you here and also sharing it with your classes.