These look really nice! I love your foreshortened shapes!
with the portraits, they look really nice - esp the coloring.
for the first set in your last post the faces are a bit long and imo if you just transform them/compress them vertically down a bit, it'd look better
not sure how to describe it but it could use a bit more volume. i used free transform here and just by transforming it, it looks more proportionate/more volumetric?:
not sure if that helps :3