Fit Pay attention to how your attire fits. Your audience will notice if your sleeves do not fit properly. Everyone is born with one arm and leg longer than the other. If your clothes don't fit properly off the rack, have them tailored so they do. It's that critical.
Sleeves Always wear long sleeves in any presentation situation.
Long sleeves project authority and a higher level of professionalism and garner respect. Short sleeves create a more casual message. Watch how people interact with you on days when you wear long sleeves and then watch the difference when you wear short sleeves. The difference is subtle, yet powerful. The tip of a man's tie should hit the middle of his belt buckle.