Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to make sheer curtains [title] Use measuring tape to measure window height from the point where the curtain rod will be to the bottom of the window. [title] Decide how much longer you want your curtains to be than the window. [title] Measure length of the curtain rod.

Ending1: [title] Add 4 inches (10 cm) of excess insulation to the measured length. [step] Bring 1 to 2 inches (2.5 to 5.1 cm) of insulation to the measuring tape to measure an additional length of the rod. Ending2: [step] Use an x-acto knife to make straight lines across the length. [title] Cut a 1/8 inch long strip that measuring from the one end of the window to the other. Ending3: [title] Measure circumference of the curtain rod and add 1 inch (2.5 cm) to allow for a seam. [substeps] How full your curtains are is a matter of taste. Ending4: [step] Depending on the room, the curtains should be 10 inches or 15 centimeters. [title] Cut the curtains to the desired length at the center of the window frame.

Answer format: ending1/ending2/ending3/ending4