Instruction: Cut the image into a circle, apply glue directly to the bottle cap or on the back of the image, and then place the image on the bottle cap. If used with epoxy stickers, it can give the photo a 3D visual effect. Application: These flat bottle caps are DIY craft projects. You can use them to make bottle cap necklaces, keychains, refrigerator magnets, scrapbooking embellishments, badges, hair accessories, etc. The bottle caps have very bright colors and can be used as home decorations and holiday decorations. If you are a teacher, these craft bottle caps are also very suitable for use in handcraft classes. Advantages: The of these craft bottle caps is treated with baking varnish, which makes the color of the bottle caps bright and full, the is even and smooth, without lines and color difference, and wear-, making them very suitable as accessories for DIY crafts. The bottle cap is made of metal, which is sturdy, and not easy to deform. The edge of the bottle cap has been specially treated, it feels smooth and not easily scratched. NOTE: These bottle caps are for crafts only, they do not have a rubber lining inside and cannot be used as bottle seals. Do not use heavy objects to press on the bottle caps to avoid deformation.