I can understand why you would think he is flying. Sometimes it's nice to see things like this & have us look at the picture in more detail. So no harm about this at all.
But I guess you have to kind of squint & imagine in 3D perception. Footprints are decreasing in size due to the incline, & the shadows beneath the feet are there to show the land is slanting [downhill] behind him.
Also when you walk forward & come to a stop, you tend to shift your position to balance & more comfortable stance. So in the picture, the last footprint is the right. Instead of putting the left foot straight forward, he shifts it forward but more to the side. Then his right foot does the same.
Since your feet & legs are close together when you walk, when you come to a stop & not do what I said above, your feet & legs will remain close; thus, you're like in a military "attention" position.
xD Probably a horrible explanation, but I try.