Not bad for first tries at a mani, but I do have some criticism's. The welds are not really very good. Even from a distance I can tell there was poor gas coverage and there is several contaminated welds. You admittedly didn't backpurge, so that's part of it, but I suspect your not using a gas lense and have little to no post purge.
Show pics of the inside of the runners. The outside means only a portion, the inside tells the other half of the story.
Like I said, not bad for first effort, but that quality isn't worthy of being sold in my opinion.