I didn't see r1k's comment before. anyway your new anim the legs just do a pendulum motion. they need to lift off ground. Also the whole body should lift when the leg is in the middle. also when arm is forward the body can rotate.

try doing a side view animation first and get that right because then u wont have to mess with perspective.

edit: also the shadow is a bit big.

stray white poxels around the shadow.

this is not good walking because one foot should never be still. look at http://www.idleworm.com/how/anm/02w/walk1.shtml

doesnt really look like walking because the feet only move backwards and then back to the starting position.  They need to move in front of the starting position too.  Also try just moving the opposite arm of the leg each time a leg moves rather than both arms.  The whole leg should move not just the part below the knee.  Also when you walk, the head should bob up and down a bit because when the legs are straight you are slightly taller than when the legs are at angles.  Look up some walk animations from some rpgs and youll see all the things Im talking about and try to learn from those.