Whoa that's awesome!
The design is great, just a few tweaks here and there and you should be done!
The main things I notice are that the round highlight at the top of it's head is too jagged on the bottom, it needs to be more rounded.
It almost looks like you're trying to AA this..with those lighter pixels being on the outsides of the outline, don't, it's actually making it LESS smooth, not more. Once you remove those extra pixels the outline isn't TOO bad, the arms' outlines are actually done pretty nicely, just the upper arm might need a bit of touching up.
The legs need work though, they're very jagged still. Don't worry though, smoothing out the outlines is tough until you get the hang of it, once you get used to it it'll just come naturally ^_^
What I recommend is looking at the templates and study how the outlines work to make their shape, play around with paint's curved line tool to see how placing pixels differently can give you different shaped lines(but DO NOT use the curved line tool on the actual sprite). Just keep playing with it and don't stop till it's smooth as butter! Your biggest problem that I see is your jagged outlines, once you manage to fix that I think all of your sprites will be a lot better. Good job so far though, it IS getting better! :thumb:
All in all, it's pretty frickin sweet. If you finish it I'll find some way to put it in The Abyss Effect when I get off my lazy ass and start doing something with it other than writing story xD
^_^