Same, I don't really dress scene bcuz I live in a quite judgy small town in scandinavia...
Personally I try to be subtle with it. Maybe you could try going to a local thrift store? Sometimes they have some old t-shirts or alike! I once found a really cool hoodie there that is scemo-like that my parents don't judge!!
and maybe instead of skulls and glitter, you could try finding something with stars and rhinestones? You can never go wrong with stars XD
I also like to wear kandi bracelets because they are more subtle and easy to cover but still look cute :3
Hope this helped!!