Many times I watched my Uncle Harry patiently string guitars. It was a routine action, done before and after every major music performance. This was followed by extensive note playing and tuning of the instrument. I could liken it to my careful brush cleaning routine at the completion of painting a work of art.
My uncle explained how to string a guitar, and that there were multiple variations on the process. He explained that there were as many variations on the process of changing guitar strings as there are guitar varieties and musicians. He specialised in Hawaiian and Classical Guitar; his eldest son made a name for himself as a steel guitarist.
An artist needs to learn how to pick a well set-in-ferule brush. There is an art to restringing your guitar. Then again, If your brush is not for controlled applications of paint, you might need the ensure that the brush hairs do splay out from the ferrule.