(It's/That/s)(good/cool/etc.) how you (did something)

In spoken English, people often use this kind of expression to praise something good. You can use different phrases that mean "good":

It's great how you were able to finish so quickly.

It's nice how you always remember people's birthdays.

And the sentence can start with "It's" or "That's":

That's really neat how the design repeats itself again and again.

This phrase appears in these lessons: