Yes, it is important that rudraksha should touch your skin while wearing to get bettter effect and to get the positive energy of it. So its good to make the mala like such a way that it shohuld get direct contact with skin.
Dear sir, while wearing rudraksha if it will touch your skin then the energy will pass through and you will feel more effect. So its better that it should touch your skin while wearing. And it will amplify your aura aswell.