Now you build the petals. Begin one petal at a point near the rim of the center oval, then arc it outward and back in—like a drooping teardrop that opens to the side. Hibiscus petals typically curve, not flat; edges should look slightly wavy or ruffled, especially as you move toward the outer rim.
Overlap matters. Usually one petal sits in front of another, and one may hide a portion of its neighbor. To show that, draw the nearer petal outline with a slightly darker line and let the hidden petal edges fade or break behind it.
As you refine, pay attention to how each petal widens near the middle and narrows toward the tip. That “bulge then taper” is one of the fastest ways to make your hibiscus look realistic.