I must say...you've improved
I wont comment on originality based on the track because I havent heard the original, but your mixing skills have improved. Everything sounds pretty clear, and all levels are adequately adjusted, panned, and hearable. No clipping and its well balanced! I'm certainly no expert in this department but its obvious you've made some strides to make your work have more clarity. I think your strings could be a tad louder, but meh. The focus is on the brass because they play the main melody. So good job, not to mention its a fun sounding tune, too. Very well arranged.
I can get you better sounds (legally, free) to replace the cheap sytrus strings and that brass sound you have if you're interested. Not that it sounds entirely bad it just doesnt sound authentic at all. Well, keep up the good work and keep improving!