How to stick cellophane on the window without foaming? Need detailed steps.

Materials to be prepared for sticking cellophane on the window include: detergent, watering can, cellophane,

First, mix the water and drop 3-4 drops of detergent into a watering can filled with water.

Second, spray it on the glass.

Third, scrape it twice from left to right with a scraper.

Fourth, tear cellophane.

5. Spray the sticky side of cellophane with a watering can.

6. Then stick cellophane on the window.

Seventh, spray the liquid again with a watering can.

Eight, scrape off excess water from left to right with a scraper.

Nine, so that the window cellophane will be pasted without foaming.