I\'ll try to add some more stuff that hasn\'t been addressed.
Try to add more highlights with your paint, an example is the bone parts you have on this guy. It looks like you went straight from bestial brown to bleached bone then to white. try adding more shades in between your highlights to help blend them together and make them smooth looking. The red looks pretty good to me, just try making the highlights brighter and you\'ll be good to go, use a touch of orange to your red to make it brighter. and just as a general tip, try painting as neatly as you possibly can.