The first 3 strides look active then you almost look like you’re shutting down again…if this is a flying run the beginning should be gradual with a definative move later on down the line. I dont see this happening…its kinda like one pace from the 3-4 stride.
Someone else commented on the low knee lift. I too can see that. There’s no pop of the track either (I can hear that from the sound of the feet landings). Next time try a build up zone of 40m (this give you plenty of time to get the form into the cones) with a 20-30m fly zone:
0—build up zone—40m>>>30m fly<<<