Lots of OOC communication - if your character is a genius in the the mystery solving sense, if an IC mystery pops up, contact the player/mods running it and ask "hey, what can my character figure out and how can they do it?" If they're meeting new people and are the type to infer things based on what they observe, ask "hey, what is my character allowed to deduce about yours and how would they know that?"

It's a lot of work and can be pretty annoying and tedious, but it'll help a lot.