How to tweak the meta description and title tags?

• Making sure the most important keywords for the webpage showed up in the meta description.
• Making sure the most important keywords were first in title tags.
• Rewrote meta descriptions so they were more legible and meaningful.
• Made sure the meta descriptions were as compelling and as relevant as possible.
• Made sure meta descriptions were no longer than 135 – 160 characters long
• Made sure title tags were 50-60 characters long, including spaces.
• Made sure headlines ( tag) were different from the title tag.