wow much neater drawing, ok it looks good the only thing i would do differently is the channeling is going to be holding your weight and potentially that of two people. I made a 6 inch fold back on the ends, two inches for the channeling and 4 to reinforce with an unhealthy ammount of stitching. I copied the method used in this claytor thread
i also did the webbing re-enforcements on the end that are talked about in this thread, if it is going to hold weight on stitches not material i was happy to go for overkill!
also it might not be clear from my crappy drawing but the angle of th triangle changes after the head and shoulder line steeper before and more gradual towards the feet its a small detail which may make no difference to the finnished product but just thought Id mention it.
also looking at your measurements, c+e need to add up to the length of the hammock beds minus the head and foot channeling (in my case, 2 inches on each end) f will be the six inch fold back i mentioned above. so i attaced the triangle to the beds after the head end channeling but before the foot end channeling... make sense? or clear as mud?