I would like to agree with those who’ve advised you to change your segment texture. It really takes away from the realism of the scene. You never see the exact same wood grain pattern in nature. You should reconsider.
It also looks like you need to correct the direction of the normals on the metal bands for the barrels in the background.
Modeling looks good, environment texture looks good.
Cheers.
Hello everyone.
I was following the tutorial of barrels of Blender Cookie and I came to this result:
It changed much 
More critiques, please 
YAY!!! You got the planks looking different, much improves the look of each barrel. I’d say you have a good level of completion achieved for the barrels. Now make some creates! 
Looks very good now.
Thanks for answer me Atemporalskill and stuart.t! 
Yay! ^^
Anyway, I wait for more comments
