my frustration comes from two things. first, the premise: "a world EXACTLY like ours except for incredible magic and magical beings that have had no effect whatsoever on the world" just isn't very imaginative. even if there's a masquerade going on, surely these powerful creatures can manipulate events from behind the scenes? to solve this, i recommend really thinking about how vampires/werewolves/whatever would affect humans and vice versa. worldbuilding may be in order.

second, character development. a significant number of players (and writers!) think that modern day = no research for characters needed. unless you're playing a self-insert, this is not true. to solve this, i recommend doing research into whatever things your character does that you don't. are they a detective? a doctor? from another country? a minority in a real-world way? rpanons has a character advice thread.