Dinda:Hair is over done,body is quite good.
Gambhir:The helmet is not smooth,you left a part above his arm.
Hodge:This one is the best out of all,yet it has some rough parts.
Hogg:The hair is over done again,the body is smooth.
Open a render then apply the following settings:
Layer>Matting>Defringe: Width-1
Select the render,select inverse[ctrl+i],feather it by 0.3 or 0.2,delete.
I hope it helps.