"In this section, I will describe a particular photo. At our university's photo exhibition festival, one of our teachers captured a powerful image of a deer whose offspring had been attacked by a leopard. In the photo, the mother deer is looking helplessly at her injured child with tears in her eyes." I corrected the verb tense to make it consistent throughout the passage. Also, "shoot" should be replaced with "captured", and "whos" should be "whose".