to pick up a big handful of leaves and throw them in the air
ーto toss a pile of leaves in the air
「葉っぱの山を空中に投げる・放る」
ーto pick up a big handful of leaves and throw them in the air
「手にいっぱいの葉っぱを拾って空中に投げる」
例:
I remember picking up big handfuls of leaves with my brother when we were little and throwing them in the air.
子供の頃弟と手にいっぱいの葉っぱを拾って空中に投げたのを覚えている」
ご参考まで!