This sounds like the beginning of a speech, and so it is often polite to acknowledge who has honored you. Then, you can say thanks for this honor, or, if you are giving a speech, it is good to share the main point you will talk about, or to announce the title of the speech. Here are some samples:
"I am honored to be in this position of speaking to the Community Garden Association. Today, I will be talking about "How to Get Bees to Visit Your Garden."
"I am honored to be in this position of accepting an award from the Car Club. Moreover, I would like to thank..."
"I am honored to be in this position of writing an essay about how to succeed in your small business. First of all, it is important for any entrepreneur to know..."