Looking tough surely has something to do with stature, but appearing... tight, angry, or mean is sometimes a byproduct of a lack of self confidence or anticipation of other's judgement of what you're wearing. I'm not a small guy myself, but let's face it; big does not always equal bad. I've learned that the more I loosen up, the more confident I feel, the easier people are around me. When I feel at ease and loosened up, I don't think people feel intimidated or afraid of me. Just my two pesos. Nothing more.