that water bag looks somewhat like my late '06 black Marmot windshirt!
More seriously, very nice work. This looks like something that even someone who is all thumbs, like me, could do. Thanks for sharing you work.
Just some questions which will reveal my ignorance about the R-W design: why aren't the carrying handles pictured on the packaging that the water bag comes in sufficient for hanging the filled water bag? In other words, why does the grosgrain and cord need to be added? What are the benefits to adding them?
If you have the time to reply and educate me, I'd appreciate it.