The rendering is ok....a little rough around the hose part.....a good fix for that is if you cant get a render that looks good in certain areas, use those areas to blend in the render. You can erase that area or smudge in or get some effects on top of that area. Hope that makes since!! In this case I would have erased the area around the hose and actually erased the edges of the hose itself.
The only other thing I dont like is the text.....Big Black letters on a very colorfull sig......were do you think the attention is going to draw?? On a colorfull sig like this I would definately play with the layer style in the text...maybe put the layer style on overlay or soft light!!