1. Make a list of URLs

Make a list of all the pages you want to rewrite title tags for. (use a crawling tool if you have a large site or lots of pages)

2. Pull in Your Existing Title Tags

Pulling your title tags (and meta descriptions) into a single list is good because;  It will show you where close duplication and crossover of targeting occurs.

4. Rewrite Your Titles Using Your Best Performing Keywords from Each Page at the Beginning of the Titles

Replace any close duplicated or long titles with unique well formed,  keyword focused titles.

Check to Make Sure CTR Increases on Your Pages Also, Look Out For Positional, Click and Impressional Improvements

Good Luck!