perfect snowboy in Animal Crossing: New Horizons every time.

What is a perfect snowboy in ‘Animal Crossing: New Horizons’?
From Dec. 11 to Feb. 24, you can find two snowballs on your island every day to build a snowboy. But https://www.lolga.com/ nobody’s perfect, so why does the snowboy have to be? Technically, you can roll the snowballs to whatever sizes you’d like without penalty, but getting them just right comes with gifts.