which SEO techniques suits best for my acting auditions sites?

Create little [comedic] skits that have the capability of going viral or getting people sharing them. Post them to social networks like Facebook and Twitter to gain backlinks.

<irony> How did you get on with those singing auditions for which you asked the same question a month ago? </irony>

There are so many SEO techniques which can be used to make your website rank very well on the search engine.
Some of those techniques are:

  • Social Media Engagement
  • Discussion Forums
  • Directories Submissions
  • Ads Posting
  • Articles Submissions
  • Guest Posting

and many more...