speaking to them? If you want to make a good impression, that is. Is there a better way to position yourself so that you seem interested, friendly, and confident? How would you hold your arms, stand, and so on?
hands folded in front of yourself makes you look defensive, which is the usual first reaction
best thing to do is keep your arms to your side, stand within a meter of the person (personal space), but no closer than 30cm (2 close )
Also, when the inside of your hands face someone, it is a sign of submission, or like 'I come in peace'- not something bad to show people the first time
I usually smile and talk with my hands. Hand gestures are always great in my opinion. As far as standing, I relax my shoulders, and often like to lean against something so it looks very casual. If its a professional talk, I try to stand tall and make a lot of eye contact. Also, always face them.
Don't cross your arms- that can be interpreted as a sign of being closed-minded or stubborn.