This isn't very constructive criticism. You could improve it through a number of levels: 1. You could have pointed out the grammatical errors and explained why

This isn't very constructive criticism. You could improve it through a number of levels: 1. You could have pointed out the grammatical errors and explained why they matter. 2. You could have pointed out the structural errors, and explained what structure should have been used. 3. You could have written a new prompt. 4. You could have re-run the experiment with the new prompt. Otherwise what you say is just unsubstantiated criticism.