"Breakthrough"

Various ideas I've had for the CQ "Breakthrough" challenge - nothing has "clicked" yet, and the deadline is getting closer and closer -





That idea of the crack, held together by the quilting, came from seeing "Tankini" by Weeks Ringle in the Quilt National 2009 book -
Is it copying, plagiarism, or even breach of copyright, when the size is different, the shape is different, the fabrics and colours are different, that "crack" is different, and the source of the idea is acknowledged?