Looking good as always. You do have some alias artifacts around your 3D models though from the cut paste I'm guessing. Can your 3D program render an alpha channel export? I do that in Poser all the time, but I'm not sure if all 3D programs can do that. It gets rid of having to then cut the image away from the background.

There is also a line in the middle of the octopus icon in the big circle.

There seems to be a "stacking" problem with the figures and wall to the left of the sea god as well.