Just a few Fruity loops tips from me:
Don't use the in built sounds they are crap. Download some new ones or get some old jazz breaks and cut the instruments you want out of them.
Learn to generate your own sounds instead of using presets on the Osc and VSTi's taking waveforms and tweaking the filters till you get some good sounds - far more satisfying that just using presets and some presets get over used... hense why all dnb tunes made in reason sound pretty much the same.
Get some good VST's like absynth, or even some free ones like synth1
Get voxenago Gliss EQ - an EQ vst that is just so fucking amazing, it actually polishes turds.
Learn to EQ and Compression - one of the hardest things to get perfect.
Denvish - I tried to Check your DnB tut to see if there was anything I could pick up, but FILENOTFOUND!!!!! - either way my dnb has got pretty good these days, not Pro yet but pretty good.
Anyway I will leave ya with a link and check back when the link if fixed - good effort man