How to send a "Message" that has text along with a photo

I take a photo with my iPhone5.

I want to send both the photo and a brief message along with it.

I touch the little arrow in the lower left hand side.

If I select "Message" there does not appear to be any way to enter even a minimal amount of text.

I know that I can "Email" it but this seems overkill.

How can I send a "Message" that contains both a photo and text?

Thank you.