I'd like to capture a moment of your day in this picture as if it were like something from a movie.
I'd like to freeze frame part of your day in this photograph as if this moment were part of a film.
なかなか難しいですが、下のような言い方ではいかがでしょうか？
ーI'd like to capture a moment of your day in this picture as if it were like something from a movie.
「映画の一コマのように、写真にあなたの1日の瞬間を収めたい。」
capture a moment で「瞬間を（写真に）収める」
as if it were like something from a movie で「（写真が）映画のワンシーン・一コマかのように」
ーI'd like to freeze frame part of your day in this photograph as if this moment were part of a film.
「映画のワンシーンのように、あなたの日常を静止画として収めたい。」
freeze frame は「こま止めにする・静止画にする」
as if this moment were part of a film で「この瞬間が映画のワンシーンかのように」
ご参考まで！
カナダ 
