First, roll out the blind and take the staples off and pull out the narrow weight stick. Measure out the size of your new material using the old material as a guide, cut and sew the bottom for the weight stick to slide back into the new material. Next, lay out the material and put the roller back in place. Watch that the blind is laid back on the material the right way so that the good side is facing the inside of your camper. You may want to check the camper hook to see which way it goes back in so that you lay your roller the right way before stapling. I had to take the staples off and redo it because I did it backwards the first time.