No time/space here to explain all you need to do… follow me to learn more. But here are some basics to incorporate in your Google+ post.

Make your Title to your post *Bold*
Include your KWP near the beginning in your Title

Use your KWP appropriately in your Post’s main content area

Utilize your KWP in a #Hashtag in your post

If you are linking to Off-Site (off G+) content, be sure that content is Juiced up with good SEO stuff like mentioned here

Include a Pretty Picture or Video as part of your post