I like the icons the most, good job on them. The monster looks a bit bland. Try to shade it like its round and not a flat object, also the eye could need some antialising maybe add some texture to the skin too. The stamp is pretty good bu again it seems a bit flat, the eggs don't appear like their placed inside the nests. Maybe you can try to make the bottom of the eggs covered partially by the nest to show some depth.
Sorry for the rubbish explanation I can make you an edit if you don't understand.
