Help for RECOMMENDATION LETTER for IB Summer Intership

Hi everyone, I'm doing a 6 months full-time internship in PE consulting. During my time as intern I impressed my boss. Driven by multiple positive comments from both partners and managing directors, I asked them for a recommendation letter oriented to IB and/or PE internship. They replied positively to my request BUT they told me to write a draft recommendation letter that they would review and sign.
So, I would kindly ask you if can help me. Do you have any draft recommendation letter oriented to IB? Do you have any advice about how to write a recommendation letter written by partners and managing directors?

Thank you in advance