How to make a leather phone cover with a fall prevention ring/Leather works

Some phone cases are difficult to paste. ↓ Please for reference ↓ [Pattern] [Leather thickness] Yellow: * I used thin leather for yellow leather, but it was difficult to paste because I used hard leather. * Soft and soft leather is recommended for the yellow part. Pink: Green: [Metal fittings used] * May not be sold outside Japan. Ring (Ring that fits your finger!) Caulking [Other] ・ I think that the position of the fall prevention ring will come to the center even if you stick it directly without making it like the movie, so please refer to it. ・ For the liquid that erased the oil-based magic for 6 minutes and 50 seconds, the seal peeling liquid was used. It can also be removed with nail polish remover or rubbing alcohol. ・ From 7 minutes and 7 seconds, we are making a blindfold on the adhesive surface. You don’t need to make it becau