I dont use FL but i guess for an overall type of suggestion, when your listenin to the song you want to flip - listen to the different attacks, start rearranging the notes in your head (if thats what your doin) once you have your sample chopped bang out different things on your board. Never think youve played all the possible variations, there are always more. This one sample i had i thought i had run through all possible flips and chose what i sounded best, i came back to the song file a week or two later and banged out two completely different (and better sounding) melodies.