Painters, I have some advice for you.

Okay I have advice.... but it's not from me, but instead from John Sargent. John Sargent was an American artist, considered the "leading portrait painter of his generation" for his evocations of Edwardian era luxury. During his career, he created roughly 900 oil paintings and more than 2,000 watercolors, as well as countless sketches and charcoal drawings. His oeuvre documents worldwide travel, from Venice to the Tyrol, Corfu, the Middle East, Montana, Maine, and Florida.(Wikipedia)

It's always beneficial to take advice from masters so check it out here:

https://drive.google.com/file/d/0B9fDHo2DZt1JaFUydU96dHIteTA/view?pli=1