In the side view the legs have no shape - pull those verts around a bit. In the front view the elbows are a little thin. The suspenders are thinner at the bootm than at the top - you might want to revisit your texture or your UV maps. Te texture where the shirt goes intot he trousers - it just stops. paint in a few…
In the concept, were his suspenders covering his badge? Speaking of the UV mapping, its still makes the lower part of the suspenders thinner than the top - unless again it was like that in the concept. his tshirt still just stops when it reachs the trousers - it gives no illusion of going inside them, thus lacking a little…