Ok, better. Fixed the low spot. Hammered some dents flat. Riveted the sheets together in between the rafters. Added facia all around, stapled some overlapping tar paper to the edges with goop in between.
Totally waterproof and looking a bit better, I think.
That roll of tar paper was laying on the floor in the garage, ready for disposal because in winter it was one solid lump. But leaving it in the sun for half a day I managed to unroll it. Used almost all of it, so one less piece of junk knocking around in the garage and put to use instead.
Now just some glue cleanup and paint, but as you can see it's raining again, so who knows when that'll happen. Anyways, it's doing its job well and I like it again! :)