I don't think people really notice when I do weird things with my hands at certain moments, because I talk with my hands LIKE CRAZY anyways. My hands and arms never stop moving when I talk. If I'm about to say something I try to draw it in the air first. Like, if I say "planet" I do these circular motions in the air. Which drives some people MAD! And of course, sometimes if I'm getting really enthusiastic, the hand motions attempt to completely replace the next word in a sentence lol! I make a conscious effort to tone it down at work, but watch out if I've had a drink or something...then it's just all over the place!
Also if people complain or look at me weird I just tell them "Whatever" or ignore them. Because they're rude jerks for saying something in the first place or staring at me like I'm dumb.