Draw two overlapping circles side by side
Sketch a downward-pointing triangle beneath the circles
Connect the outer edges of the circles to the bottom point with smooth curves
Erase the inner lines where the shapes overlap
Refine the outline into a clean heart shape
Add a curved line across the upper left area to suggest depth
Add a second curved line inside the lower right area for the 3D fold
Draw a shadow along one side of the heart
Shade the darker side gradually
Blend the shading to create a rounded 3D effect
Add a highlight on the opposite side
Darken the edges slightly for contrast
Clean up any rough lines
Finalize the outline and shading for the 3D heart effect