What is the meaning of Musical Skills

Musical ability as a term is used to describe the sensitivity for music, the ability to understand music, and/or the ability to produce music. ... One can only measure how well a person can perceive musical stimuli such as small changes in pitch, loudness, rhythm, and other sub-domains of music processing

Explanation:

the above mentioned statements talks about the creativity of an artist and to what extend they can utilize and experiment on the objects provided.   differing size and subjects are given so that an image of wisdom is created. displaying a transition from light to dark in something by darkening sections in order to create a shadow. and lastly, putting bits and pieces together to formulate a new image.