Two errors ....
Error two as the drone sat on the ground just idling I let go of the controls. Then watched as the drone slooooowly tipped on its side then tumbled over onto the props. The engines cut out. That was error two. I should have landed closer to me. I ran over. Put the drone onto level ground and tried to start up to spin off any water. Nothing. Lights flashing etc but it would not respond. So I took the battery out and headed for home.
If you have successfully landed on a flat surface, hold the left stick down to shut off the motors asap, it takes about 3 seconds for the motors to shut down. If you leave it idling a gust of wind can tip it over during an idle. It's best to shut the motors down asap after landing, safer too. If you ever run prop guards, tipping is a even bigger problem because it's more top heavy, with the added weight extended beyond the props. I don't recommend prop guards when flying outdoors.
If you cannot land in a flat area, or say it's too wet to land, or the wind suddenly comes up and it's too windy to land (in fear of tipping and breaking a prop) you can learn to hand
catch the bird. This skill set will come in handy when you get surprised with circumstances beyond your control. This includes a dog wandering by that wants to eat the bird, and you're battery is exhausted, you have to land. Or maybe there are kids that are running around suddenly in the area and you don't want to risk them rushing over to see it, potentially touching it.
When landing, just let the bird hover in place 6' off the ground for 10-15 seconds to insure it's stable. Walk toward and approach the bird slowly, carefully grab one the vertical landing gear posts with your right hand, staying clear of the props of course. Don't move the bird, hold it in place 6' off the ground. The motors will be spinning away at this point and it will fight to stay in place if you tug at it. AFTER you grab the bird firmly, hold the left stick down on the RC to turn off the motors with your left hand. It takes about 3 seconds for the motors to shut down, after it realizes it's not moving (you holding it still in place 6' off the ground). Once the motors go off, then you can lower the bird from 6', set the RC down somewhere in a safe place so you have both hands available, then turn off the bird battery using the button, push, push+hold.