Hello musics
The arrangement works well. I feel the production quality isn't quite up to par, though. Here are my thoughts.
What programs are you using? Right now it sounds like Anvil Studio or the like, and the SF is possibly/probably from the Soundblaster MIDI hardware. I suppose that's not really a bad thing (I was using similar software/hardware for years :| ), but you could really improve your sound with better soundfonts & plugins. I am not the right person to ask about that (seeing that I use Reason, which isn't compatible with those fancy gizmos), but you should look around the Audio forum and see if anyone has any information on plugins/samples/soundfonts you could use.
Yeah, sounds alright, but it could sound much better with the proper tools, so go out there and invest some time into that. It'll make a big difference, for sure.