Pour a bit of green and black paint onto a paint palette. (You can add the white paint now or wait a bit to prevent it from drying out.)
Dip a cotton swab in green paint and use it to paint 2 or 3 long stems for the dandelions, as well as shorter blades of grass on the bottom of the cardstock. (You can use a paintbrush instead if desired.)
Dip a second cotton swab in black paint and use it to paint an oval at the top of each dandelion stem. Let the paint dry for about 30 to 60 minutes.
Grab 8 to 10 cotton swabs, press them together with your fingers and tightly wrap a small elastic around the middle to bundle them together.
Dip the Q-tips into white paint (pouring some onto the paint palette if you haven't already) and press down as many times as needed to fully coat the ends. Before the paint has a chance to dry, gently press the Q-tips onto the cardstock to create a dandelion blowball on top of each black oval. Repeat as needed, dipping the cotton swabs back into the paint if necessary. Leave half of one dandelion unpainted.
Grab another cotton swab, dip it in white paint, and use it to paint individual dandelion seeds flying off into the wind. Allow the paint to dry fully before displaying.
Video
Notes
Helpful tips:
Don’t skimp on the paint: Make sure to add a generous amount of paint to the paint palette and dip the Q-tips in it as often as needed to re-coat the ends.
Let the black paint to dry: To prevent the black paint from transferring onto the bundled Q-tips, allow the black paint dry a little before you start painting the dandelion head with white paint.