Reddit mentions of Black Belt Krav Maga: Elite Techniques of the World's Most Powerful Combat System

Slow down. When you train, challenge yourself to move smoothly, instead of quickly. You'll train a faster response by learning to move smoothly through your techniques than by rushing through the individual strikes and then having to pause and reset between each component. Slow is smooth, and smooth is fast. Internalize that. Learn to slow things down.

Read. Pick up some Krav books if you haven't already; they're invaluable for reference. I use Complete Krav Maga and Black Belt Krav Maga by Worldwide, but there are several variations out there. Pick up Meditations on Violence by Rory Miller, as well. His insights are sobering and will help you learn to be a better fighter. It'll also strip away some of the ego you will inevitably start to develop a few months in.

Train with people who are better than you are, regardless of size or gender, as frequently as you can. You probably already know who these people are. Train also with people who are bigger and stronger than you are. Understand the difference between the two, and learn how it changes the dynamic.

And take care of your body. We don't talk about this enough, but your technique means nothing if your body is too weak from overtraining or undertraining or poor diet or lack of sleep to keep going to class. Make sure you're fueling your body so you're not getting injured.

And welcome to Krav.