I've over heated my brakes on a small roadcourse (still a newbie to racing) they were smoking as I was getting ready to start the next lap (no hot lapping) Pads were ~4 years old and glazing so they weren't in the best shape and I wasn't using them properly. Try not to hold the brakes (squeeze on quickly and ease off quickly) Sounds like common sense but it's a learned technique. When you're not sure of the actual latest braking point you tend to want to ease on them and hold the brakes longer. This builds heat for longer which leads to more overall heat and a higher chance of fade. Your's isn't a timed event so if you have to coast it's ok.