How to please a top (lesbian)

I'm not a woman, so take my advice with a pinch of salt, and I know even less about Lesbian sex (internet research on pornhub probably doesn't qualify) but I'd suggest that lesbians are just as diverse a bunch as the rest of us when it comes to the bedroom. What works for one person may fall flat on the next. You just need to judge how much they're enjoying it from their reactions. Perhaps they will straight up tell you what they want.

From my vast experience of watching smut online, I could suggest that a search for 'Girls Out West p*rn' may give you some ideas. I could be wrong, but this stuff strikes me as more female-friendly & realistic than most. All-natural Australian girls, not silicone. Of course, it's still performed for an audience, but the girls do seem to be actual lesbians or bi mostly.

Sorry if this wasn't quite the advice you were hoping for, but as there were no other replies I'd offer my two pennies worth

You can explore ‘La Petite Mort’ which is French for ‘The Little Death’. Think of it as an ‘Oh my God Orgasm’. It will leave your whole body twitching while you are struggling to breathe. The breathing issue is due to your diaphragm temporarily seizing and will pass shortly. The twitching may go on for several minutes and may start up again if your partner swats your butt.
Having one involves about an hour of continuous oral sex which, except for lesbians, might make finding a willing partner difficult. Lesbians have the advantage of being able to return the favor.
You can find some background info in the book ‘The Hite Report’ by Shere Hite. She describes the orgasm as a combined internal vaginal/anal and an external clitoral phenomenon. She found that difficulty achieving one is largely due to clitoral orgasms interfering with the combined orgasm.
To desensitize the clit I’ve found a three twenty minute stage process that works. Stage 1 involves servicing the clit continuously for as many orgasms that occur. Stage 2 Adds two fingers in the vagina to servicing the clit with one’s tongue. Stage 3 Move one finger from the vagina into the anus and service all three.
After an initial orgasm it may seem that nothing is happening. Keep pleasuring her while the internal orgasm builds. Once it starts up she may begin lifting her body from the bed while holding your head in both hands and grinding her pussy into your face. When the orgasm hits she will collapse twitching back on to the bed. Crawl up beside her and hold her while her whole body twitches uncontrollably.
The good news is that the two of you working at it should be able to get it down from an hour to about thirty minutes. If you can, suck her clit into your mouth and pleasure it incessantly before easing off when you go to finger **** her to another mind bending orgasm.

It works best with whoever is on top wears the strap-on. We take turns; I'll start on top, then we'll switch, then if we wish to keep going, we'll switch again. Same if we're doing 69.

We generally start off in the scissors, where neither of us are on top, but we're facing each other. We'll start by tribbing, then work the double-headed dildo in. It's a bit of work, plus it takes a bit of concentration to get the rhythm down once the dildo is inside both of us, but it's well worth it!