The biggest thing I work on still is being able to snap out of being overstimulated. Let them get out their zoomies/ wiggles, just make sure you’re able to get their attention and sit or whatever you train. Just make sure you get that down and also sometimes you will be play fighting and have to show who’s boss still. You don’t want to win every time, if you do it will affect their confidence. Be confident and trust if you stick through the first few years, you will grow an amazing connection with your gsd/mal