Nice chart, good work! Great use of call and response btwn the ww and brass. Maybe try to expand the harmonic content by adding substitution chords, slash chords (works great for cadences) or add a bridge or shout chorus with varrying chords as a contrast; the static harmonic mvmnt makes the listened tune out after a while. Remember always keep 'em guessing and make sure your beginning/endings are the most exciting part of the chart - it's the first and last thing that the audience hears!