I just be mostly myself, whatever that happens to mean. I have some unusual vocal noises that I'm used to using. A strange little mid-pitch 'hmh?', I whine sometimes if pleading (har!) and I do a yelpish-squeek if I'm suprised.
I'm usually always on the alert, not in a nervous fashion, but just aware. I like to sniff out nice aromas... or try to identify hazardous ones. If I catch a whiff of burning electrical I -will- try to identify it, or I'll be nervous! Also, too, I use the facial muscle that actually -does- control ear movement, but it's not visable unless you're really, really staring!
And, if it can't be shredded with the hands but can be using teeth, I will! It's fun!
I've never really wanted to wear ears or anything in public... I just like making the best of all that I am.
Oh, and most cats are drawn to me if given the chance. I can't help being a magnet for hairballs!