I actually quite like this photo.. The focus is on the roos face and your attention wants to rest there. I like the color of the bark and leaves - they allow his feathers and comb to stand out nicely. I find the other two hens and background barns to be a little bit of a distraction so I would suggest cropping your picture to remove those hens and a little of the left side too to put your rooster in the center third of the picture. I like that you adjusted the brightness and color but perhaps bring it back a wee bit. You want "just enough" to make your comb *pop* without losing that lovely softness of this breast feathers.
Here's a real quick crop & brightness/color adjust for you.. majestic young man!!