Fair attempt, but you should watch your exposures, as above. The first was shot at ISO400, but it looks pretty sunny out there - did it need to be that high? Not really sure how fast they were all moving, so I can't say that you're doing anything wrong here, though if they weren't jumping about, you should be able to handhold 1/60ish and get a sharp image.
To give them a little more pop, you can just do some contrast and saturation work in PS or the GIMP. A bit of sharpening might be good as well to really pick out the hair. Obviously, the top of 2 should be cropped off to make it a better shot.