Sydney is a signature member of the Pastel Society of America and designated as a Master Pastelist by this New York City organization. She is also a full member of the Catharine Lorillard Wolf Art Club in New York City.

She has won many national and international awards, and her work is collected in the United States and Europe.

Several publications have included her pastel work including The Pastel Journal, The American Artist, The Artists’ Magazine, Pratique des Arts, and Fine Art Connoisseur. 

Book publications include: A Painter’s Guide to Design and Composition, Pure Color/The Best of Pastel, Stroke of Genius 3/The Best of Drawing, Lessons in Classical Drawing , and Sketchbook Confidential.

Her work can be seen at the Peninsula Gallery (see map) located in Lewes, Delaware, and at the Rehoboth Art League in Rehoboth Beach, Delaware.