The only way to upgrade fireworks is to use more gunpowder when you make them. Add up to three to make your fireworks reach maximum height.<\/p>" } } , { "@type": "Question", "name": "How do I make heart-shaped fireworks?", "acceptedAnswer": { "@type": "Answer", "text": "
Minecraft doesn't have an option to make fireworks that explode into a heart shape, but you can do a workaround by arranging red fireworks into a heart shape. You can also put them on the vertical face of a floating square of blocks to make the effect more visible from ground level.<\/p>" } } ] } ] } ]