IMHO the worst airbus landings occur with flaring too high and taking power off. (Especially with A321). If you are lacking in experience your first thoughts should be landing in the correct place (no deep landings) and at the right speed. Firm landings have never killed anyone, and in some circumstances are preferable i.e. wet runway etc. I have been off the bus for a few years, but my last 6 months were my most consistent for landings in my career. My technique was for a low shallow flare. I copied this off some very experienced trg capts and seems to be the most consistent way of impressing the pax, as well using up the least runway. The flare when correctly done, will feel barely perceptible especially compared to a light aircraft or even a 737. My advice would for the first 6 months keep things simple. Accept that you will probably have a few bad days, and once you have settled in, find a technique that works for you.