What you're describing is known as "coding conventions", and it can be different in every language. No formal convention has ever really been defined for DBP, so I tend to take a Java approach(which many languages look similar). Which is typically what people refer to as "camel case". In java, you start with lowercase. In C# you'll find the majority start with uppercase.
Indentation is very important, and every nested block should be indented inside its parent.
I'm not as strict with my own rules in DB as I would be in another language. But most other languages are case-sensitive. And if you ever have to do Cobol, ohhh boy you better indent properly or the code won't even work!
Quote: "you'll notice I always all-caps my standard DB functions"
All caps are generally regarded as constants. For me, when I use globals in DBP I'll either make them all caps too or use camel-case starting with upper.
All this may not sound like a huge deal when working alone, but when you have to start sharing code with others or finding stuff on the web to look at, you'll be happy if everyone uses the same conventions.
"You're not going crazy. You're going sane in a crazy world!" ~Tick