You might have mixed the detail and preview image. Other than that, I'm having trouble reading this as a walk cycle. If you asked me to honestly describe it, I'd say he's having a stroke. Not trying to put you down or anything like that, though! Walk cycles can be difficult.
edit: On a closer look, it looks like you have only half of the animation. Check this thing out for reference. The animation pretty much only covers the first three frames.
Yeah, i was confused too when i made the animation :D..Thanks for helping me out :)