One thing I strongly recommend is to avoid getting into a rut of a repetitive patttern of foreplay during “regular” sex. For instance, it could be kissing then kissing her neck and ears then tits then oral then fucking. While overall this structure as a base is reliable, I find it refreshing, fun, and hot to change up the sequence as well as the pacing..
To begin with, the pacing. Don’t stay on the same speed and overall intensity and energy, or just steadily increase. Sway back and forth between fast and feverish and slow and sweet, for sometimes a short moment or a longer interval with each.
With sequencing, one can add stimulation, such as flipping her over and kissing her back of the neck, back and ass cheeks and/or spanking her. One can change the order such as neck then tits then kiss, etc. one can go back and forth between spots.
If you’ve already introduced roleplaying or elements of bdsm to your play you can have a bit of getting into a character or doing a bit of impact play, rather than a whole scene, for instance, as well.
Use your hands in different ways, your mouth varying with licking kissing biting. Tease by sliding towards an exciting body part then dart away and go somewhere else instead.