How to paste the water sticker of Bandai Gundam model?

First, use a pen and a knife to cut off the part of the water sticker to be used, soak it in water (only a few seconds), and then take it out and put it on a flat surface. After 20 or 30 seconds, the adhesive on the sticker will dissolve. When the water sticker can be moved, use tweezers to pick up the sticker separated from the rubber backing paper, put it in a suitable position and flatten it. Then use a cotton swab to absorb water and roll it flat. It is best to coat a layer of sticker softener on the sticker, which can make the sticker and the sticker.