Finished a Doug Dawson Workshop and WOW.  If he comes to your area, take his workshop. He is generous with his ideas and how to apply them to your paintings.  I walked away with my head stuffed with new ways of seeing and 'translating' all the incredible views Nature gives us into a solid plein air painting.  My visual tool box was filled with new skills to play with when I go outside. I'm packing up my stuff for a trip outside!