They’re pretty easy to install because you don’t need tools or certain expertise to fix them. When you order, they’ll come with two options, either made to measure or ready-made.  Made to measure, peel back the tape,  line it up along your window, and stick to the window frame or glass. Keep the blindfolded up for ready-made, trim the blind to the size you want using an appropriate knife, and make some passes to cut through all the pleats. If your windows are large, you can overlap the blinds or apply a slight trim where necessary.