@phoenix-yip the guy with shirt addition looks good (it describes his character more) and you added colour to the man in the hood though I liked the hooded man before in the original -more mysterious. Can I ask who is the purple guy? I did actually mean adding some detail to the purple character -unless he is meant to just be purple skinned (and that's fine), that's what I meant by adding markings/accessories/clothes (to that character). But if the purple character is the same throughout carrying nothing, wearing nothing (unless pants which we can't see) etc. and adding would take away from your storytelling, than yeah it's good.
I appreciate you taking my feedback well. I don't have much experience in comic or graphic novel style -I do like some artists.