Detail doesn't look to bad and you have managed a really nice low pov.
I know he's in his winter colours but looks a tad washed out and maybe a stop over exposed. A wee boost in vibrance/saturation and pull back on the exposure would help imo.
Nice pic. It appears you may have some compression artifacts, it appears a little grainy. I did the same thing with one of my pics recently, it's easy to do.