Install Measure My SEO on a client's blog. Show them the "before" - what their SEO looks like before they hire you to do their services.
Then after they hire you, do the tweaks... just simply follow each suggestion Measure MY SEO gives you for each blog post and page...
When you're done it's easy to show your client the "after" with 100% scores for each post and page! They'll be glad they hired you.
BONUS: it's easy to instruct your outsourced workers to do it for you!