Well, they're not exactly impressive. Nor are they real Revamps.
Sure, you did do a nice job recoloring them, but recoloring isn't revamping. Revamping is fixing a sprite- the outlines and the shading as well as the colors. The shading on these sprites is poor- you have to really create your own, adding on to spots that already have shadows and highlights, make completely new ones in other place. Especially on their faces, which right now are much too flat, and by editing it, you would also do things like make the eyes white instead of the skin color. :/
These are okay, but they’re very simple and easy. Although they do look pretty good, they can still be better. I think you could have put in a bit more effort revamping them, though, but maybe you also just don’t know much about revamping. =P
Meh, just keep trying. Check out the tutorials- there are plenty of them dealing with revamping. And have a look at other people's revamps too, just to get a general idea of what you need to do.
~Psychic