Dark Wing

Alrighty here it goes hehe
First I would add AO to your characters skins. I use poser , not sure what you are using tho so I will tell ya poser wise stuff cuz DS .. I know jack! lol
Anyways AO all skins buy going into the material room in the advanced tab, click on a skin section and shift-click the AO option (http://content.screencast.com/users/Adiene01/folders/Jing/media/f2ce66b5-e94f-40fb-9c50-4ce18bd92b6d/2009-09-01_1349.png)
Then i go in and delete the ao off like the tear, cornea and eye surface sections (it will look aweful if not)
Even if you do not wish to use AO on all surfaces i would strongly suggest using it at least on the Sclera. This adds more realistic shadows on the eyes.

OK umm the textures on your rock there is super flat. Maybe plug the texture map into the bump and adding a bit of bump on there to give it some natural shadows/texture. If you are using poser then change the image map filtering to "none" You can find this in the mat room, click your rock and mushrooms. The image map plug in will expand (if it isnt already by the first tab on the right at the top of the image plug in) You will see the filtering at the bottom on this node. Click on the right menu and it will pop up select none. This should help with those textures. Maybe add some bump to the shrooms as well.
are you using a prop wall or a background image? I would suggest maybe adding some blur to it since she is your focus anything behind or infrount of her, by nature, will become unfocused when you look at her. This is your DoF Try those and see if it helps the outcome you are looking for :)

Nice c/c, adi. Only thing I would add is the negative space you have that throws the balance off of the picture. I'd almost do a bigger render on the girl and crop around her, otherwise the looker's eye will keep being drawn off to the upper left with all that space.

:thumbsup

Thanks for the CC :) I'll work on these spots :)