If all you are aiming for is a 1cc, you could consider switching to Reimu (stronger than Sanae and the best shot type in the game imo).
Thanks for the tip! I actually tried Reimu a bit and had a harder time, though I agree that she'd probably be easier once I got used to her. Since I'm planning on eventually doing everything with everyone, I'll probably just press on with Sanae (Besides, it's not quite the same playing a game about divine spirit collecting as anyone else, you know?

)
A good thing to do is practice deathbombing or deathtrancing, since it'll save you from the frustration of dying with bombs in stock. I had to practice a lot to even stand a chance of finishing with enough lives when I first played. Even now I fail to deathbomb properly on the random occasion.
Sanae's unfocused shot can deal more damage to the boss than her focused shot at close range, which also increases spirit gain. If you need to, it's always useful to bomb/trance on top of the boss to maximise your spirit gain.
Wow, I wouldn't have guessed that about her shottype. That should help alleviate a lot of point blank deaths.
And yeah, I can only ever consistently deathbomb in IN or with PCB Reimu, so specifically honing that reflex would be good.
Since "Do not restart" is an advice that even masters give, I'd say yes. Seriously, perfecting first two stages won't teach you a thing about later ones, and saving one life early on won't save the run if you're too likely to lose it at the end anyway. Restarting should only be done when working on high-level stuff, like no-miss or scoring runs, when you HAVE TO meet certain expectations, early levels included.
Will do, thanks. Maybe that's why I find EoSD so much easier than even MoF, because I practiced the hell out of each stage...
There are actually two ways of getting more spirits. Shotgunning only works for bosses and fairies with a lot of HP. For popcorn (fairies that die wth one/few shots), you get more spirits if you kill them as soon as they appear. So, for example, if you took your time with one wave, and another comes out, switch to the new one, you'll get more spirts than if you finished off old one and then switched to the new one, which would become too old to give spirits by that time.
But I don't think absolutely optimal trance usage is important for overall survival, so you should look somewhere else.

THAT'S why shotgunning wasn't always working
yay something to think about during stages
Not bombing enough. Seriously, each life lost with unused bombs is two enemy patterns you could have pretty much skipped. Having ANY doubts about an attack? Bomb. No, don't take a risk. Bomb. You have Stage and Spell Practice to try risky strategies.
*sigh* you're right. I always tell myself every run I'm gonna bomb more...then I get cocky and want to capture everything and oh geez where did all my lives go.
Speaking of which, make use of them. You've done quite well in earlier stages, so it looks like you're just not used to later ones (I blame that restart syndrome). Put some time to grind stages and bosses until you're comfortable with them. If something still gives you trouble, remember to just bomb there. Don't worry too much, you seem to be quite able, I think you can do it eventually.
Also, have a go at stage/spell practice, which pays off very well.
Okay, okay, I'll practice...
It sounds like my problem is I haven't been taking TD as seriously as the others. I've heard so much about how stupidly easy it is, so I keep expecting to not have any trouble and then getting frustrated when it turns out to be like any other Touhou game. Thank you all for setting me straight and reducing my rage!
(but i swear if yoshika spawns a kunai on me ONE MORE TIME)