How do you treat a new employee who seems to have the right skills to do the job in the perfect way?

Encourage him.^^^^^^^^^^^^^^^^^^^^^^^^^^

If you want to gain allies at work treat everyone with respect. Employees that are known for their fairness and respect for others are the ones that people trust. If something goes wrong on the job, the boss and other employees know that they can get the right version of the situation from the employee that is kind to everyone.

Agreed to both the experts.................................. 

Provide opportunities for this person to demonstrate his abilities more, keep encouraging and guiding him in his/her growth. During the performance cycles, treat the employee well...

Simple encourage him and provide sufficient incentives to keep him motivated towards the work.