Silicone Rubber Grommets 1” Diameter (Pack of 25)

I like them but no instruction as to how to apply or sew. I messaged you you said you had a video and tried to send to me but too long to send then just left me hanging. Can’t you briefly explain it to me Or something? Understand you’re busy but that’s just bad customer service .it cost me a lot in Canadian dollars for a small order and I don’t want to guess at how to apply them so they are strong and don’t fall off