I reckon it's quite good.  Did you actually use B&W textures? Or was the render at least desaturated afterwards?

The only thing that bugs me is the sky... I can't quite put my finger on what though.  Maybe it's too soft?  Or maybe the image itself should extend a TINY bit more upwards?  Also the texture on the shirt looks a wee bit stretched on the boob.

Other than that it looks great to me.  The roughness on the leopard texture is perfect. And the feathers are quite good for no post work.

I especially like the rock formations in the foreground.