Make vertical cuts all the way around the paper roll, spacing them at least 1/4 inch apart. Long cuts that are around 2 inches work the best. Smaller cuts that are 1 to 1.5 inches long are also good for the inside of the fireworks.
Bend the cut pieces of the paper roll so they're facing outwards, making a sun shape.
Pour paint on a paper plate and use a paintbrush to spread it out. The paint circle needs to be large enough that it will cover the fanned out paper roll.
Repeat the last step with the remaining paint colours. We used seven colours for variety, but you can choose to use fewer (or even more!) colours.
Step 2: Start painting
Dip the fanned ends of the paper roll into your first colour of paint. Bounce the roll up and down and rotate it to make sure you have good paint coverage.
Stamp the paper roll onto your cardstock. Lift up the paper roll and rotate it slightly before stamping it down again in the same place. This creates a fuller firework.
Using a fresh paper roll, repeat the previous steps in a new colour.
If using a smaller cut roll, stamp inside of the larger ones to create two-toned fireworks.
Sprinkle glitter onto the freshly painted firework.
Fill up the rest of the cardstock with fireworks.
Be sure to add glitter after every 2 or 3 fireworks. If you wait until all the fireworks are stamped, the paint dries too much for the glitter to stick.
When you are finished painting and adding glitter, pick up your painting and tap off any excess glitter. This can be done on a paper plate, newsprint, or over a garbage can.
Your fireworks painting is complete!
Video
Notes
Protect your working surface with newsprint, parchment paper, or a large piece of cardboard for easy clean up. Then your fireworks can go over the edges of the paper without making a mess.Don't put the paper rolls in the paint until you're ready to use them because they become soggy after sitting in the paint for a while.