I finished this piece this morning.
I learned a few things.
"Painting" with collage paper scraps and shapes is not for the faint-hearted.
It takes a lot of planning (in your head);
cutting, trimming, tearing, shaping your painted papers;
working out the positioning of various elements;
a steady hand (all those tiny scraps); patience (a lot); and glue - a lot of glue.
And that's only the half of it.
Simplicity is the removal of the useless and the unnecessary--source unknown