You will need:
Pink and purple paint
On the white paper, print 3 flowers in a line. Use a purple finger print for the centre of the flower, and add pink fingerprints around the outside as petals.
For the roses, dip a finger in pink paint and another in purple. Swirl the two fingers together in a spiral so the colours mix.
Fold the card in half. Cut out the flowers and glue the painted strip down the front of the card.