First things first: You need to clean up the color scheme. You have dark grey, light grey, black, yellow, and silver all mashing up together. I would stick with just three; yellow, silver and black, or yellow, silver and grey. You also have black armor, yellow armor and silver armor. Try to keep one color on top, like silver.
The legs are a tid bit too short, and its weird how there is no bulk on the front of he waist.
The torso looks great, but the lower arms need to filled in, right in that wrist area. Overall, a decent MOC.6.5/10 or 3/5
The color scheme, shoulder and torso design all look nice, but for some reason the head looks strange. I'm not sure if it's the size or how it's attached. Either way, it doesn't take away much from the rest of the moc.