Q: how do you correct dictation mistakes?

Howdy masts,

I enjoy the ability to dictate text as well, and yes, corrections need to be done manually.

It sounds like are familiar with the basics of dictation.  What helps me is learning more of the commands.

Alas, I don't see commands that allow me to navigate and correct previous text, although once highlighted you could dictate the correct text.

OS X Yosemite: Dictate your messages and documents

Ambiguous text is underlined in blue. If the text is wrong, click it and select an alternate. You can also type or dictate the correct text.

All the best.