Looks to be the same case design as this specimen from nearby: https://www.inaturalist.org/observations/36248328
I presume it has just hatched out from the cocoon beside it, found it in the garden on a lilly pilly tree.
Undescribed cymatoplex sp see http://v3.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=377959
Attracted to back door halogen light during the night and remained on wall in morning. Captured and then photographed.
Euphronarcha luxaria (Guenée, 1857), to actinic and LepiLED lights, Bournda National Park, NSW, Australia, 8 October 2020