Letter of recommendation

I need a letter of recommendation impersonating my Mentor who owns his own gym& graduated in kinesiology. I studied under him as an apprentice & then eventually an employee doing massage therapy and stretching. I need this letter to speak about my time under him and what I learned. This is for a scholarship to massage therapy school. I need this because I would soon like to receive a doctorate in Kinesiology and this is a stepping stone. Massage therapy school is very expensive and I can’t afford to go if I don’t get their scholarship