Here is my best practices
Try it out: blinkcourse.com ~ 100 page speed score
Considering your website loads in almost 7 seconds on Good 3G and 4.75 seconds w/o throttling (330mbps connection) it seems like your optimization only did so much.
You're looking at the wrong parameter. Page speed score means jack in the real world.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.