Big blue and black epitrochoid hypotrochoid drawing completed

Interior addition is a 24-cusp hypotrochoid resembling a blue flower. Final drawing is about 4-1/2 feet in diameter. The blue flower interior was drawn using a Zebra Surari 1.0 emulsion ink pen. The black and blue alternating lines of the epitrochoid seem to appear as indigo blue from a distance.