OKAY! Time to teach the little froggy how to sing. Everyone else can just ignore this, I think it'd be easier for me to post my tips for Sodium here:
Stage 1: You're MUCH better at collecting power/points than me. The only real tip I can give is to wait during Rumia's non-spell cards. If she fires the green bullets, stand still and then stream them. It's not only more cost-effective than going around them, but occasionally you can't do that and will screw yourself over. You don't want to get killed by Rumia, do you?
Stage 2: You do everything well here, nothing to give.
Stage 3: The beginning is easier if you park yourself where the enemies appear rather than take them in the center. For the tiny bullet walls part, make sure you position yourself below where the wall spammers appear to take them out before they can fire.
The part after midboss Meiling has one big trick: Every time the fairies fire the big clusterfuck of blue bullets, STAY IN THE CENTER. As you demonstrated nicely, going off to the sides means you have to fit in these tiny gaps of quickly moving diagonal bullets bullets, which kills you more often then not. Marisa A can kill the center enemies before they fire, leaving this big fat gap in the center where you only have to avoid stray bullets.
Good job on the opener. As for me, remember that I'm really bad at Touhou and don't know how to enlarge the gaps. My biggest pointer here is your death on Rainbow Dream Vine: Don't let that happen. The biggest thing to remember during lunatic is that this is not practice mode. Trust your intuition rather than your reflexes on stuff like Rainbow Dream Vine.
Stage 4: Try to wait as long as possible before bombing the books. You could have waited another half a second or so, which would have saved your life. Now, biiiiiiig problem with your post-Koakuma performance. For the book lasers part, start at the left, not the center. It may take a bit to find the right spot of the left (not extreme left, but about 2 inches to the right of it), but if you find this spot, you can simply slowly stream to the right the whole time and not have to change directions or anything. Finally, the part where the kedamas come down and rain bullets is streaming, but you did not treat it as such. With Marisa A, make sure you are below the vertically moving rows, and ignore the horizontally moving ones that are simple streaming. For the ones at the right, make sure you are ready to change directions.
For Patchy's non-directional lasers, you have the right idea. However, you need to start further to the left at the start before streaming. And instead of going back to center after the second wave, stay to the right to give you more room. Don't focus on killing her before time runs out. After all, all you do is lower your rank. Besides that, don't die with bombs in stock. The fire bullets in this game SUCK, so don't trust them.
Stage 5: Since you're doing the loophole, stream the fairies at the extreme top and stream down, rather than being a bit below it and streaming up. The streaming part after the random spamming fairies leave should have you end up in the center to take out the first wall-spamming fairy. After that, move immediately to the left to take that one out, ignore the one on the right, and get ready to take out the second one on the left.
Finally, your death on the non-spell: If you want to use this tactic, remember that you can make yourself move slower if you press down whilst moving in the direction you want to focused. For a precision positioning like this, it's essential.
So, I hope this helps you little froggy. ^_^