In my opinion, everyone is an artist as each one of us can perceive things in a different way and each one of us learn at least one skill in life. Only the canvas, colours we choose and paint brushes we use are different for different people.
Even a surgeon is a skillful artist, using his tools - surgical knives to shape his patient's life. But the man is not a born surgeon, he needed extensive training and skill building and of course possessed a basic intellectual mind to pursue medicine.
So, if we have basic understanding and interest in a subject or any kind of art, we can be taught or trained to be creative in that art, we can give our best performance if we are determined in our endeavour.