keep ur nose angled slightly down on release as always
Maybe in a tailwind putt or down hill.
I almost always prefer some sort of nose up putt, but as long as you practice you can putt whatever way you want and make just as many putts as the next guy. Nose down, nuetral, nose up, horseshoe style, seizure in the air, whatever works for you. Something I will strongly suggest is using soft hands on your putts, like you're holding a really ripe peach, soft enough to keep it in place but none harder.