Easy way to make custom headers? What ??

Well said YR, and no doubt!
By the time you do all the work yourself on a simple system, (before reading any header thoughts...) you’ll probably be twisting your head off and back on just to have your brain explode. After reading thoughts on headers, your head will imploded and then explode twice over because you wil have done all that work and then discovered much. And you’ll say, what a waste of time that was.

Ether build it simple and never worry or read a lot and ponder for weeks, years... LOL