An excellent piece! Can you please share how and why you combine Photoshop and ArtRage? I find it difficult to create any sort of precision, fine details, hard edges in ArtRage, so I guess this is the reason you used both?
I use artrage to give an oil painting feel to some details...not everywhere. just in the large area. Indeed it's a bit hard to be really precise with artrage but you can ad some paint effect and erase it later on photoshop. Like that you can combine two method for the rendering of your painting. it's not a ultimate way, it's just my way and I found it to be really cool...but I'm sure you can find a lot of other method to give the feeling that you want in your painting