Here are links to 3 relevant samples:
#1: Is about ppc bid stacking:
#2: Is about cpa bidding
#3: About analyzing a sudden drop in sales:
A little about me: I’ve been managing PPC accounts since 2006, as well as writing copy and even doing a little on-page SEO.
And, before that, I had a tech background: finance, computer programming, statistics etc.
All the best,