Jessica Fligg really likes to do en plein air paintings. No matter the season, she is out there painting away with her oils and watercolors. A couple years ago, we featured her exhibit at the Greater Concord Chamber of Commerce that focused on paintings from one year (October 2014 to September 2015). Now Fligg, who “studies how lines, positive and negative spaces, lights and shadows work together to create space and visual pathways,” has returned to the Chamber with another set of work, Impressions En Plein Air, that will be on display through June 29. And as you read this, Fligg is currently on another round of “A Year in En Plein Air Painting.”