2 sentences

1. 请在文件的右下角署名。

   qǐng zài wén​jiàn de yòu​xià​jiǎo shǔ​míng.

   Please sign your name in the bottom right corner of the document.

   Source: Dong Chinese Dictionary

2. 他在给前辈的信中，末尾署名为“弟”以示尊重。

   tā zài gěi qián​bèi de xìn zhōng, mò​wěi shǔ​míng wéi“ dì” yǐ shì zūn​zhòng.

   In his letter to his senior, he signed off as 'your younger brother' as a mark of respect.

   Source: Dong Chinese Dictionary