If you share the model in FBX or OBJ format, others might help by examining it for errors. (to upload a model, put it into a ZIP file, then drag-and-drop into your reply)
so for one i do think you did a good transition of the concept into the overwatch universe in terms of proportions, i do love the concept a lot but its a bit too toony for what overwatchs style is. maybe the eyes are a bit too big still and could feel a bit more humanoid. i will try to stick to your work and not compare it…