Natural skill is not a territory marked by a few forever but a head-start for some for the time being. It means two things: If you don't have that natural skill now,you can catch up in time. If you do have that natural skill and don't use it now,you will lose it in time.  


Examination should be about learning from your mistakes and improving upon them. It shouldn't be a factor on basis of which people judge you. Neither they about know your circumstances nor they can imagine what you've been through.