I like the model and the realistic look he has 
for the CC, couple of points,
1st I saw the model it felt more like Levi then Eren, or more in the middle.
2nd compared to the mud he’s standing on, the shoes - cloth seems really clean - like pretty brand new.
below are more the details what I think people will be picky on
3rd, patch on the chest pocket should be on the left side of his body (looking from the character’s perspective), not on the right. Patch on the shoulder should be on both sides.
4th, if he’s under “Scout Regiment” the logo is correct, but if he’s in the “Training Corps”, the logo is different.
this one is from the anime character sheet, they even have a pattern for the shoe 

hope it helps!