Almost any drone operator has a pre-flight procedure; you have one too. You might not know it, but it is in your head. It might go something like this; You open your bag and grab your airframe, twist the props on and put in the battery. You take your transmitter/controller, slap on your iPad and connect it with your lightning cable. Turn on the iPad, then the transmitter and finally your drone. You’ll do the same thing over and over again every time you fly. That right there is a pre-flight procedure.
A pre-flight procedure consists of pre-defined steps you take every time before you fly. It should be something that is very systematic, step one is always step one, step seventeen always step seventeen and so on.