It probably would have made sense to work the center red areas before the outer center areas on my Rainbow Butterfly (by Danji, Laurel Burch Artwork). But, it worked out ok.
I stitched over the red painted area with 3 strands of Planet Earth Silk, Fury 1005 using a Climbing Stitch located in Painted Canvas Embellishment: An Idea Book by Carole Lake and Michael Boren (in the section appropriated labeled Wings 2).
I ignored the painted placement of the Sundance Sequins (SQ216) and placed a few extra in the area which are held in place by Miyuki Delica Beads 11/0 (DB-0310, Matte Black). Again, the sides are uneven (the left side is larger than the right side).