Inside a wormhole you could not determine how far away it's entrance was just by looking at it. This is because the light could not disperse wile in the wormhole past a certain point so everything in the wormhole from a certain distance would appear as if it might as well be the same distance. Looking threw a wormhole in this sense would be a bit like looking at a laser as with both distance is tough to calculate.
Wile in a wormhole as well if you looked in any direction other than the directions of the mouths of the wormhole you would see your other side. For instance if you looked left you would see your right side, and if you looked left you would see your right side, and if you looked up you would see the bottom of your feet, and if you looked down you would see the top of your head. It would look to you as if your body surrounded itself in all directions except those facing the mouths of the wormhole as the geometry of the wormhole would cause light beams going in a direction parallel to the mouths of the wormhole to travel in circles.