Do you cut off selvage when making curtains?
It depends on the fabric as some selvedges are tighter than others. In the grand scheme of things when you are making curtains the time taken to trim off the selvedges is not that much, but unless the selvedges look very tight I do tend to leave them on.
How hard is it to make curtains?
Making curtains is easy, but only if you know the basics
Curtains are almost all straight sewing, making them an easy project for beginners. That said, there are still some basics to master before embarking on sewing curtains for the first time.