Barrel process icons

Some more icons a client website. These a few of the icons that belong on the process page that describes the process of making the perfect wine barrel. The process page will show all of the steps in alternating rows (styled just like in this shot, one light row with a dark icon on it, then a photo-overlay row with a light icon on it).

We're still having some doubts about the bottom right icon. It's supposed to represent the adding of the bottom hoops around the barrel. We also tried having the wooden staves not touch each other at the bottom to make it look like there's a need for a hoop to tie them together. The strokes at the side in the icon you see in this shot are supposed to convey the bottom hoop being placed around the barrel. If you guys n gals have any suggestions on how to improve it, we'd love to hear 'em. One idea we had would be showing the hoop around it skewed as if its being placed around the hoop, or just to have a hoop lean up against the barrel.