To make comic book flowers, begin with simple shapes like circles and ovals for the petals. Outline them thickly. Choose vivid colors and use cross-hatching or stippling for shading. Add some sparkles or dots for that extra comic touch.
First, decide on the style of the flowers - whether they're cute and cartoony or more realistic. Next, outline them clearly and color with bright, popping hues. Don't forget to add highlights and shadows for depth. Also, experiment with different patterns and textures within the flowers to make them stand out.