Remodel the head so that the hair is short, this way you won't have to animate it, remove the cape, you wont be able to animate it. Animating hair and cloaks is very hard, avoid having to do it for now. His neck has a hair texture change it to some skin texture, try to add in changes to the model, maybe make the shield better, change the sword, the gloves and the boots, those will be easy to change. About the portrait, the texture of the inside of the mouth is brown, change it to a mouthy texture; the filter mode of the second layer of the material of the shoulder pads is transparent, it should be blend.