Just one think the pict where there's that "shark " who 's eating ...(somethink) . The character in the bacground have a to strong black line art ... It give a weird result with the sweet degrade of inshield.
In the one (highter) the guy with the peroket ... The grey you let to the pupette give a better result . I think.
Black and big line art (contour) are better to be used as the first and near plan , isn't it ? (with this second line art(white) it give a good style )