It's curtains...hang em high! So much goes into the of hanging curtains, depending on the look you're going for will depend on where you put them. When in doubt, here are three lengths you can practice with:
There are three standard lengths for draperies or curtains.:
1. To the window sill
2. to bottom of apron
3. 3/8” above the floor or carpet pile
If you hang sheers behind the draperies, their length should be 3/8” shorter at the top than the draperies they are to hang behind.
Sheers are usually 4 times the width of the window.
ESTIMATING EXAMPLE FOR FABRIC WITH NO REPEAT