Composite bonding is a minimally invasive procedure, so you shouldn't require any local anaesthetic. First thing the dentist will do is understand what you're looking to achieve and make sure your visions are aligned. Once that's done, they'll get started. So the first stage is they pop something called an etchant on, and this is essentially dries out the tooth. You then put a bond, which acts like a little bit of a glue to the tooth, and then they'll layer on the composite, which is essentially white filling material, onto the tooth and shape it accordingly. At the end, they'll then spend quite a long time polishing it down and shaping it until they're happy, and most importantly, until you are happy.