I was frustrated with elastic thread because it won't gathered.. it looks like a plain stitch. I thought I did something wrong as there are thousands of tutorials for elastic thread - even our fellow malaysian crafter made a tutorial for it - said that it's a easy peasy thing to do. Little that I know, there's a bobbin tension that needs to be tighten for Brothers sewing machine. I found the great info through a fab tutorial from Cretiveheart... I L.O.V.E the outcome!
If you encountered similar problem - usually found on Brothers sewing machine, just give it a try. It'll blew your mind away! :D