Round jar size is 15cm (H) x 18cm (W), which is suitable for horizontal decoration. You can add multiple decor items. However, the vertical decoration is limited so it will be difficult to add a moss wall.
Choosing this option means that you will participating in the upcoming workshop (check the front page)
You can take the decor items home even if you don't use all of them but you cannot take the tools home (tweezers and brush)