Here’s a good link that may be helpful for you to write a good cover letter when you apply for internship positions.

Here’s the link: http://www.npr.org/sections/ed/2017/02/27/502445571/hey-students-5-things-that-are-wrong-with-your-cover-letter?utm_source=facebook.com&utm_medium=social&utm_campaign=npr&utm_term=nprnews&utm_content=20170227