“Stick and Rudder” by Wolfgang
Langewiesche and the “Jacobson Flare” (https://www.jacobsonflare.com) are still two of the best explanations out there of where to look during the landing flare, and how to transition from looking at the aim point to looking farther out and judging vertical rate. Jacobson may be somewhat mechanical but it is a great place to start for large aircraft (though he is not really saying anything different than Langewieshce at the end of the day). Remember these and any other advice given are “techniques” to accomplish the “procedure” in the Airbus FCTM, and do not override it.
Never forget that (autolands notwithstanding) an ILS glideslope and a VASI / PAPI are just tools to get you into a position to find a solid visual aim point on the runway and complete the landing maneuver visually. If snaking up and down at 75 feet trying to bracket the PAPI causes you to lose the visual “lock” on your “non moving” aim point thru the windshield, your priorities are backwards.
Once you learn to really see this, you can actually watch this as PM and catch if the PF’s aim point on the ground wanders up and down the runway. You will see their VASI deviations well before the lights change color.