First off, caveat that everything is subject to preference, so if you try something and she’s like, no, that doesn’t mean you did anything wrong to try something new. These are just ideas…
Start slow - long, slow laps from “bottom” of vulva to clit, along with slow laps around the edges/outside of the labia majora. Increase speed gradually until you’re proving steady and consistent licks to her clit.
For more controlled experiences, try to draw that first lock out to a 10-count, repeat a few times, then go to a 9-count, etc
Corny, but use your tongue to write the alphabet on/around her clit.
Inserting one or two fingers vaginally for g spot stimulation. My wife doesn’t like busy g spot stimulation, or much at all until she’s well on her way towards orgasm, so I’ll go two fingers inside and give a more firm pressure on the spot with some very subtle movement as she’s getting close.
Use a hand to lift her hood more fully off her clit as she’s getting closer. You can then use fingers to stimulate the top of her clit while you’re licking and/or apply pressure on her mound which can be very pleasant resistance as she’s building toward orgasm.
Edging: if she likes what you’re doing and you can tell or she says when she’s about to cum, pause and stop direct stimulation. I’ll often take that time to kiss her hips and thighs, slide my penis in and sit gently, sit on her face, or blow gently across her vulva to chill and give goosebumps. After a pause to back to oral. Repeat as many times as you can both handle
Incorporate a dildo or vibe for inside stimulation.
These are my tips off the top of my head. For even more detailed techniques and ideas, “She Comes First” by Ian Kerner is a phenomenal read for anyone who loves to pleasure women.
ETA: didn’t realize I was one of the more recent replies on this merged post… I think I’m at least pretty consistent in my advice!