Sewn to the Sky, 827 Chestnut St., will host an opening reception for "Passage and Pattern: New Work by Cat Collier Martinez" from 5 to 8 p.m. today, Nov. 21. A Chattanooga native, Martinez has spent the last 10-plus years creating a large "forest" of tree paintings. In July, she left her corporate day job as a furniture, fixture and equipment buyer for a national restaurant group to pursue a full-time art career. Now painting a new body of work inspired by the word "Passage," her paintings are of abstract, geometric-looking plants, with a focus on pattern and color. Refreshments will be served. For more information, call 423-531-0447.