hi

i recently started using clear shrinky dinks. i never used the completely clear ones before, i have only used the rough sided ones but i wanted to make clear pendants.
when i make them... they are still clear , but after i shrink them. they become slightly opaque. i was really hoping they would stay clear after i shrink them. am i doing something wrong?
does anyone know how to make them stay completely clear?
i know it is possible. there is a woman on etsy who does it but she won't share her secret. heheh.
any help would be much appreciated