You really didn't edit it that much. All you did was cut away the sash, put some black pixels around and over the eye, and shorted the hair up a bit. Then theres the poor recoloring of the 'kneepads' (actually a bright outline with some red inside) and some basic recoloring of the vest.
All-in-all its not really that impressive, especially for something that took 'a long time to make'.
But, maybe it could be improved if you added more to it, such as changing the bracers to red ones and adding spikes (like Reiko actually has), or chose a less cumbersome sprite to edit from. Maybe use a plain standing sprite as a base instead of this awkward one.