It's a nice idea and the execution is pretty well done. Personally I'd skip the PS generated texture though, imo it's a bit distracting from the actual image. If you chose for it to give the image an older look, I'd recommend to use a photo of an old paper/fabric texture. More subtle and perhaps with better "old" result. Good luck!

I took the texture completely, wazowski, what did you think? thanks for your help

I think this way the image is way better to see, author . Good luck!

The stark highlight on the knight suggests that maybe the tree 'dragon' might have a more pronounced highlight on it's face and front. Nice job!

let's say that the lighting in the armor of the horse is a reflection of lightning illuminating the belly of the dragon