Hmm, what is the purpose for the binder? For example, are you using it for a quick reference guide while doing clinicals? Are you just putting it into storage? Prepping it for use as a study guide? Don't let these guys offend you with their comments. Think of them more as the teasing older brother, they're trying to be friendly and sometimes it may come off as belittling, but it's 'usually" not meant to be that way.
If you have a particular ambulance service in mind that you want to work for they must have a protocol manual, possibly online. Perhaps you could consider dividing your binder to match the chapters in the protocols. For example ours are divided into General (prep), Chest Pain, Medical, Trauma, and specialised protocols.