nice ideea ,but...
so...nice ideea, i liked some of the percution.you have to be more carefull with the scales you use.sometimes you use natural and melodic minor at the same time on diferent instruments...that make a very unpleasant dissonance,you may use diferent scales at the same time but that should be in style(like post romantic music)and after a while the repetition of rythm (same and same again...)could be done different,like changing colours.4measures you use one snare next 4 you use a diferent one ...make a breack,use different layers so snare react on velocity.you can also make some tricks to sound more realistic.try to pan violins on left ,second left-middle,viola middle-right and cello right.bass on middle.percution also.try to think like for real orchestra.hope i was helpfull.