Would someone proofread this short letter please?

Question

Thank you so much for taking time out of your busy schedule to serve as a shadow mentor for the morning. It was very interesting and educational. I especially enjoyed the times when you let me interact with your patients.

Thank you, again, for giving me this valuable learning experience.

Best regards,

Answer 1

I would make it more personal by changing "..as a shadow..." to "...as my shadow..." in the first sentence, and starting the second sentence with "I found it very interesting...".  Remove the extraneous commas in the last senterce, or change to "Again, thank you...."

Answer 2

There are no grammatical errors that I am aware of.  

Answer 3

Thank you so much for taking time out of your busy schedule to serve as a shadow mentor.  It found it so interesting and educational.  I especially enjoyed interacting with your patients.

Thank you again, for giving me such a valuable learning experience.  

Most sincerely,

Answer 4

I think that is a great letter, but maybe you should take out "the times" in the last sentence.

Answer 5

Thank you very much for serving as my shadow mentor this morning. I appreciated you taking time out of your busy schedule to allow me to gain valuable experience and interact with your patients.

Respectfully,

(Your name)

Answer 6

This is good. The only change I see is you need to capitalize the title "Shadow Mentor" and take out "a".