I think i responded to the problem though, since a RO character will always be "choppy" with only 3 animations frame!
Also, look at the middle frame ( the stand frame if he use the standard VX script ), it is NOT a stand frame.
The sprite looks great, but if you want to use these in your game, try making them with more frames ( at least 4 walking and 1 standing ) and use a custom script! ^^