To do this, I seek out colors within the floral scraps and match them up with a color of a contrasting print scrap crumb I have in my crumb box.
Take each pair of scraps and sew right sides together using a 1/4″ seam allowance.
Once you have chain pieced all of the pairings cut them apart and press them. This is where you will want to trim with your rotary cutter so the size of the two pieces line up.