i find that at the beginnning i might get caught up just makin the loops, the parts of the track, tweaking particular sounds and sh1t, and wont be thinkin about the arrangements, and when i do, ive lost focus on the song as a whole. usually when i go back to it, and all the parts are gettin finished, i find it easier to just focus on the arrangements. until i go... "that snare doesnt sound right...." and there goes two hours listening to a loop....haha.
peace.
peace.