The pose is much better!

IDL along with gamma correction will almost certainly enhance the lighting. I always uncheck the "light emitter" checkbox on anything with a transparency (hair and plants, usually), though, because otherwise the render will take too long for my impatient soul.

Checking the "crisp" texture option for the skin in EZSkin may also enhance the render of the skin. Sometimes it doesn't work very well. Sometimes it's fantastic. It's a toss-up, but if you haven't tried it, it's worth a go.

I've noticed -- at least in my case -- that most firefly renders come out of Poser with less contrast than they appear to have when you view the render within Poser. Dunno why. Taking the image into an editor for post processing, however, can do wonders for that.

Now, as for photorealism, you can have ideal, you can have real, and you can have realistically ideal. Ideal never really looks right to me. For example, when people (even children), squint with their lower eyelids, there are going to be folds under there. And no one over the age of about 10 has such perfectly smooth lower lids (except maybe the seriously photoshopped 50 year old Hugh Laurie in a L'Oreal ad). She's an adult. Don't be afraid to give her face just a hint of character.

Anyway, you put up a reasonably high res image, so I took it into photoshop and gave enhancing it a shot. When I increased the detail level, it was apparent that there are lots of details in the texture. They just aren't showing up in the render. But you can't enhance them too much in post, or the skin starts to look really dirty. As I said earlier, using the crisp setting on the skin textures might really make a difference. I did add some light effects to give the image a bit more depth. Don't know if the final result is better, though. However, if you decide to give post processing a try, consider rendering with HDR optimization checked and then export as an .HDR image. You get a lot more data to play with and can do quite a bit more. Also, just in case you don't have them, Google is giving away the Nik Software suite of photoshop filters for free. They really are quite amazing, and a lot of fun to play with. And if you don't have photoshop, I believe it's possible to get them to work in Gimp (though it would take some fiddling).

You can see that with the details enhanced that her left forearm needs a few gentle swipes with the morph brush.

Finally, I love the skirt!!. But that shirt desperately needs a better texture. I bet even a tiling texture would work very well.

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PoserPro 2014, PS CS5.5 Ext, Nikon D300. Win 8, i7-4770 @ 3.4 GHz, AMD Radeon 8570, 12 GB RAM.