We have always enjoyed making these. So special to give a card that you have made by hand and also uses flowers picked from your garden.
You do not need many flowers, even grasses and weeds can make a lovely picture. If you do not have a proper flower press, or if like me you have two but cannot find them, just press some flowers between some absorbent paper in a telephone book under a heavy box. We use cartridge paper for our absorbent paper. As soon as we finished pressing our flowers, I found the flower presses!
Cut up and fold some lightweight card to make some simple cards, and then carefully arrange the pressed flowers and glue them onto the card with just little bits of glue.