How to learn wall painting without painting skills

How can you learn wall painting without painting skills? This question suits us. When we do wall painting, we will use some tools, such as self-adhesive stickers. We use the engraving machine to carve the outline shapes of various patterns on the sticker, then stick the self-adhesive sticker on the wall, dig out the engraved places, and finally color it, and a picture is finished. We can also do wall painting without painting.