YOU SAID:

With a shape of an "L" on her forehead

INTO JAPANESE

額に「L」の形をしている

BACK INTO ENGLISH

is in the shape of an "L" on the forehead

INTO JAPANESE

額に「L」の形をしている。

BACK INTO ENGLISH

It has an "L" shape on its forehead.

INTO JAPANESE

額に「L」の字が入っている。

BACK INTO ENGLISH

There is an "L" on the forehead.

INTO JAPANESE

額には「L」の文字が入っている。

BACK INTO ENGLISH

There is an "L" on the forehead.