2 sentences for 头像 (tóu​xiàng — profile picture)

1. 请在个人资料里上传一张头像。

   qǐng zài gè​rén zī​liào lǐ shàng​chuán yī zhāng tóu​xiàng.

   Please upload a profile picture in your personal profile.

   Source: Dong Chinese Dictionary

2. 她刚刚换了一个新的微信头像。

   tā gāng​gang huàn le yī gè xīn de Wēi​xìn tóu​xiàng.

   She just changed to a new WeChat profile picture.

   Source: Dong Chinese Dictionary