Who should I cosplay as?

I need advice for new cosplays!
I'm 16 and i'm 5"8

I already cosplay:
Homestuck: John, Rose, Jade, Dave, Jake, Kanaya, Nepeta, Karkat, Cronus,
Hetalia: Italy, Finland
Black Butler: Sebastian, Alois
MLP: Rainbowdash
AOT: Sasha, Hanji