Do research about the brand before applying to jobs. If you find a copywriting job you want to apply for, avoid just talking in vague terms about your copywriting experience. Look up and see what it is you might be writing about for them—this will not only help you create a more detailed cover letter, but it will help you in an interview to show that you’re truly interested in the job.
You can write this letter to potential clients when you are launching a new business. You can mention the name of the business, and the products you will be offering and how beneficial these will be for the customers. If you are inviting any famous or special guest on the occasion do not forget to mention that in the letter. Close the letter by reminding the client about the significance your products would bring for them.