Practice the flam rudiments we circled on your sheets with a metronome. Make sure to raise the accented hand up higher than the softer note (and remember that the soft note comes just a little before the big accented one). Also, practice exercise #136 in your Essential Elements book. It has several of the flam rudiments in there, as well as a couple drags. And, of course, keep Tis So Sweet, You Will Be In My Heart, Chorale, and Shenandoah up to speed.