1) The smaller the opening of the vase, the better the balance of the flowers. Especially for those who are not used to decorating with flowers, a vase with an opening of about 35 cm (4 in) or less (smaller than a fist) is recommended.

2) You can achieve a good balance by arranging the stems so that the height of the vase and the height of the visible part of the plant are in a 1:1 ratio. If you are decorating with flowers that are used for bouquets, a vase that is about 15 to 25 cm (6 to 10 in) in height is a good choice. If you are decorating with tall flowers or flowers with branches, such as lilies, sunflowers, or large roses, a vase with a height of 30 cm (1.2 in) or more is recommended.

3) You can create a sense of unity by including flowers of the similar color as the one used in the vase. For example, if the vase is in a shade of green, it is a good idea to mix something with green leaves.

4) Place a mat or decorative stand under the vase for a more sophisticated look. A wooden board or flat plate can also be used instead.