I finally found oven-soft clay where I live (which happens to be the very central of Indonesia, so shame if I couldn't find any).
The clay that I use here is Lyra. Some say that it's not as good as other clays but it's pretty okay for an amateur beginner like me.
I hand sculpted the sakura flower and the skull ones.
The black one is made out of scrap black.
The earring and the round pendant is made using kaleidoscope cane. I was rather curious whether I could use Lyra to make those canes or not. Not perfect, but not completely bad either.
All I need is to get proper varnish before I put them on strings. I like my pendants shiny.