About the installation position of curtain tassels
When deciding where to place the tassel, it will depend on the part of the curtain tassel that holds the curtains together, so it is not possible to determine how many centimeters above the floor it should be.
However, when installed, the length should be slightly less below the tassel decoration (the top should be slightly longer). Please refer to the diagram. If the height from the curtain rail to the floor is 230cm, a nice balance would be 120cm at the top and 110cm at the bottom.

The higher the window, the greater the ratio; for example, for a window about 3m, the ratio should be about two-thirds at the top and one-third at the bottom.
The balance will change depending on the height and size of the window.
However, no matter what size it is, the lower part of the decoration will still be less balanced than the tassel decoration.
Please refer to this page to decide the position of the tassel.