Control is better than correction in art

Art is a physical manifestation of a mental concept. To convey what you see in your mind's eye to the casual eye of the viewer you must have masterful control of your medium. This means practice, it means pushing your execution and control of the materials at hand so that they readily assume that physical representation of your idea.

Lacking control of your medium the best one can achieve is a suggestion as opposed to a conveyance of a concept through accurately expressed imagery.

In a perfect world, four years of art school would be focused on work within a medium with the sole consideration of control of the processes and materials involved. Picasso drew anatomically accurate pidgeon feet repeatedly to achieve mastery of shade and shape long before he drew his first abstract bull. For Picasso, abstract was after mastery, not instead of it.

When I sought instruction in repousse' I called art schools. I spoke to professors who knew of the process but to an individual they said it took too long to teach.....
So I taught myself and though the path of discovery without guidance was long and slow, it took less time than 4 years in college.

Time was not the issue, patience was and is. Control cannot be taught in a series of emotional expressions or through every art departments default mode of "found objects". Control of materials comes first then emotions expressed through artwork will be accurately conveyed and more importantly they will be accurately perceived.