Every customizer eventually has a custom that doesn't meet up to specifications.  Some are caught in the early stages and never finished.  Others are finished and even displayed, but upon further reflection it's decided that they're just not good enough.  And some, fortunately, are put out of their misery when the toy companies finally decide to release a beloved figure. 

The customs in this graveyard represent serious effort gone horribly wrong. I hope you enjoy looking at my pain. 

Supergirl (1st try)

Wonder Woman