Even seeding grasses can make an interesting addition to your work. The beginner can often use heavy second hand books to press their flowers. Place blotting paper between the leaves so the pages aren't damaged and lay your material in between. You can then place more books on top to add extra weight to aid the process. Books are ideal for pressing leaves, leaving them perfectly flat although they' re not so suited for small flowers which need a more evenly placed and concentrated pressure to press them perfectly.
Flower presses can either be store bought or made at home.
A threaded bolt is then pushed through the bottom of each of these with a washer and wing nut securing the other piece at the top. In between these you create a sandwich of corrugated cardboard and blotting paper with extra layers of paper if you wish. There is some difference of opinion as to how long you should leave your flowers in the press. Some people think a few days, others several weeks. This can depend on the climate with flowers drying much more quickly in a drier atmosphere.