no painting is made up of an entirety of good strokes.
if a painting is started with a good stroke and slowly starts to deteriorate, good strokes can still be made. if a painting is horrible from the start, and the paint's already cakey and dry and stubborn, good strokes can still be made.
good strokes can be learned; precise and categorized and made with a focused eye. but education does not guarantee a good stroke.
good strokes can be random; flicking paint and getting it under your fingernails and ruining your brushes. but fate does not guarantee a good stroke.
a good stroke is found.
a good stroke is found by lucky people.