My plane instructor gave me a piece of advice about landing that massively helped me and it applies to Paramotors too. It may help you too. When you flair try to focus on flying a couple of inches above the runway for AS LONG as possible. Shift your eyes up and don't look too close to your feet. The theory is that if you are focusing on landing your brain will try and make the landing happen quickly - you'll look close to your feet and the ground will be moving fast, this will add to the overload and you'll try and make it stop by landing at that moment and you'll be going too quick. If you slow everything down, shift your eyes towards the horizon, the ground will appear to move slower, you'll feel like you have more time and your depth perception will be a lot better. Then try and hold yourself 6-12 inches above the ground for as long as you possibly can - all a flair is, is a way of trading your airspeed for lift, eventually, the wing runs out of lift when the airspeed isn't high enough to maintain it. At this point, you should touchdown at a much more comfortable speed (and if you're close to the ground, nice and soft). Since your engine is off there is no way to add speed to the wing so inevitably you'll touch down when the airspeed can no longer sustain enough lift for your weight.
In short: don't try and land, because it'll happen to quick - try to fly above the runway and you'll touchdown anyway (just slower).
I hope this helps you, it definitely helped me get over the sensory overload when landing.