Cant argue with any of the above. It DOES get easier the more you do it and by the same token,the more you do it the better you will get,
assuming that is you do have SOME talent.Any muscle not used will not get stronger and that applies to your performing muscle as much as any other.I do remember a top Pro performer who said 'When you Stop being nervous is the time to stop peforming,because you are TOO confident then.