I am using Affinity Designer rather than Illustrator, so I don't have the Illustrator patterns to choose from for the innermost heart fill. Instead I used the Morrocan Trellis pattern I made in Helen's Exotic Patterns class. You can see my project from that class here: https://www.skillshare.com/classes/design/Illustrator-for-Lunch-4-Exotic-Patterns-Quatrefoils-Moroccan-Trellis-and-Layered-Diamond/1345936852/projects/70200?via=class-details-projects-page.