like, for most of them it's a guy ENGAGING in the sin; you do a guy who won't stop eating for gluttony, an angry guy for wrath, etc etc
but then you get to lust and it's Hot Succubus Demon. she's not being lustful, she's inspiring lust. completely different approach!
you either gotta embrace the first approach, in which case lust should be like... a weird horny guy. make lust a dude who won't stop commenting SHOW FEET on every woman's pics online.
alternatively you make EVERYBODY like lust. Gluttony should be the world's greatest chef. Sloth is your buddy who really wants to hang out and watch every episode of the x files while smoking this great new weed he got. Pride is a little weasel man who keeps trying to tell you how great you are and how nobody deserves your greatness they just don't understand