Chop the couverture separately and melt over a warm water bath. Meanwhile, roast the almonds in a pan without fat, turning them light brown, remove them from the pan and let them cool down.
Pour the couverture into a piping bag with a small perforated nozzle. Spray approx. 6 circles of each variety (approx. 4 cm Ø each) onto a baking tray lined with baking paper. Allow to dry a little, cover with flowers and sprinkle with almonds and pistachios.
Place in a cool place and leave to dry for about 2 hours.