It could be a very awkward situation if a man travels all the way just to be rejected. Fortunately it almost never happens. Usually people even turn out to be more interesting and attractive in person rather than in letters. It is natural. Even if they send you their best picture, thinking that in fact they look worse, it is usually not true.
People look much better in motion - when they have their cute expressions, habits, and so on.
An important thing though is to be prudent. Get to know him. Have him send you several pictures of him, ask him to tell more about himself, what he likes and dislikes, have him tell you some stories from his life experience. At the same time tell him more about yourself, try to give him a truthful picture of you. And be sincere with him.