If you truly want to upgrade your language skills, then translation might not be the best way to do it, but you're really just playing around, so I believe that if you find it fun, then more power to you.
彼は自分の語学力の源として、幼少期からたくさんの競走馬の名前を覚えていたことを挙げた。
He gave his remembering of race horse names when he was a child as the source of his language ability.
彼女は語学力を活かせる仕事を探している。
She is looking for a job where she can make use of her foreign language ability.