Anonymous wrote:Dear So and so,
While I am sad to see our working relationship come to an end, I can't help but feel grateful to you for allowing me to care for Timmy and Larla. I have loved every moment of my time with them.
I can't thank you enough for placing your trust in me.
I have enjoyed working for you and would absolutely love keep and contact and babysit the children often!
Professional writer here. OP, do not begin each sentence with "I". Also, note that in the above example, despite the fact that this is supposed to be a thank you note, nowhere in it do the words "thank you" actually appear. Other than that, it's pretty good.