[quote=@ClocktowerEchos]
How do you RP those traits exactly?
[/quote]

Okay, let's see! The time I used "smart" and "charming" to qualify my character was around the time I started role playing so by using myself as an example—

[sub]oh no.[/sub]

To put it bluntly, you don't. At least not well, usually. To piggyback on [@Zurnt]'s point, you have to round out your character with qualifying traits. If you're playing someone is smart, you don't just say they're smart. You say they are quick witted or have an incredibly amount of knowledge about dragons or are really good at puzzle solving. You give them qualities and then you have to actually show them off in the RP. Meaning if you yourself aren't quick witted and funny, don't try to role play as someone who is quick witted or funny. If you can't bullshit about dragons, don't play as a dragon expert. If puzzles hurt your brain, don't play as an old lady who does the crossword and Sudoku every Sunday. Give them another trait that'll show they are smart instead of just telling us they are smart, and if you can't make think of one or aren't able to pull it off then, well, you can always play it like me and just role play as big dumb jerks so that you feel smarter.