Calculate Hardware & Material Needs: The rod length should extend beyond the window 8-12". So if you have a 9' window, the rod should be about 11' in length. Adjust this based on your window's overall size and spacial limitations. Adding or subtracting to keep appropriate scale. You'll install the rod about 8-12" above the window frame (size permitting) - so the length of the curtains should reflect that + any additional length for optional pooling. Order enough rings for each pleat, plus one for each end of the panel. You'll also need drapery hooks if using pleated curtains. Custom drapery often comes with hardware - so double check before ordering.

Install Hardware: Measure twice, drill once. Take the time to measure, and re-measure. It's easier to spend the time prepping than fixing an incorrectly drilled hole. Take one of your brackets and place is 8-12" above the window frame, and 8-12" outside the window frame -> this should refelct the overall length you ordered. Use a pencil to mark where the screws will go into the wall, this is where you'll install the wall anchors if needed. Repeat for the opposite side, and in the center (the center bracket will just go 8-12" above the window frame). Be exactly consistent in the height placement (ie: 9" above the window frame for all three brackets, or 11" above the window frame for all three brackets). Have an assitant hold the hardware into place and use a level to make sure the rod is perfectly level. If needed, screw in wall anchors, then screw each bracket into place.

Put up Curtains: Slide the rod into the brackets and add the rings onto the rod (if using). Attach drapery hooks to each pleat of the curtain & each end of the curtain (if needed). Then slide the curtains onto the rod (pocket style curtains) or hook the curtains to the rings (pleated style curtains).