What to write in an email/cover letter to Nursing Recruiters?

I graduated in May with my BSN and took the NCLEX for the first time about 3 weeks ago and passed! Thank goodness. But now I am dealing with the stress of job searching and applying. I was wondering, as a new nurse without prior work experience (aside from 3 years of clinical in school) how do I write a cover letter or what do I include in a cover letter to a nurse recruiter? Any suggestions would be greatly appreciated! Thank you!