HOW LEGOS CAN HELP YOU PAINT BETTER

I Spent this week resolving both my figure painting and cast painting.  I’m figuring out where I should keep details and where I should let things fall away, all for the good of the big impression of the painting as a whole.  One way to figure this out is to imagine your image as Lego pieces.

But how is imaging your image like Lego pieces going to help paint the impression better?