Wow, very cool, man. I feel like his standing sprites are a little 'thin. Like his body should be widened by a pixel. He seems really skinny compared to, say, Hector.
Maybe that's just me, though. The moving map sprites seem fine. He also stands out from all the other map sprites, and that's all that really matters.
Edit: Oh. You just edited the Ike Vanguard map sprite. I missed that.
Edit 2: Have you tested it ingame? There might be palette issues.