2 sentences

1. 很久没写英文，笔头生疏了。

   hěn jiǔ méi xiě Yīng​wén, bǐ​tóu shēng​shū le.

   I haven't written in English for a long time, so my writing has become rusty.

   Source: Dong Chinese Dictionary

2. 他笔头膏墨，准备书写一副对联。

   tā bǐ​tóu gào mò, zhǔn​bèi shū​xiě yī fù duì​lián.

   He dipped his brush in ink, preparing to write a couplet.

   Source: Dong Chinese Dictionary