Overall looks very good, tones & colours all seem pretty consistant. From a couple angles it does look like the tank
is sitting on top of the fluffy green ground cover, looks like it
should have a better footing, settled into smaller greenery. And I know someone will probably hassle
you about the cedars not being "to scale", but I think I like it,
certainly adds good natural colour & textures to the scene.
Thanks for posting some pics for us,