hmm
Well it's not perfect, but you've got some good ideas.
First thing I would change is that kick... it sounds really clicky and too full of resonance. Try using a punchier sample, or try to compress it and sidechain it a bit. It's too blunt to be honest, and a little bit of that could fill up the space.
The synths kinda sounded like presets.. There's nothing wrong if they sound good where they are, but they don't sound fitting. They're too filtered and phasey. You need something that will stand out, something closer to a saw wave. You can do that easily with 3xosc. (I'm assuming you're using FL studio) Throw a bit of reverb and chorus on it, maybe compress it to add some sustain. It'll give it more of an anthem-type sound, which would be fitting for something like LOTR.
The bass is ok, but it sounds too poppy and cheesy. If you want a really thick bass, use 3xosc again and play around with sqaures and saws (be sure to turn all the coarse pitch knobs to zero) and the cutoff envelope with some resonance.
Back to the drums. Your samples aren't that great, but it's hard to find good ones. Look in the Vintage pack (it's already in fl studio) for the open hi-hat 2 and a clap. There's some nice closed hi hats there, too. Try adding some reverb to your claps. You get a more defined groove, plus it adds a lot of space to your tracks. ;)
One more thing, and that's the plucked instrument you're using. It sounds really bland and clicky, maybe a piano would work better. You could always compress it too, maybe add some reverb as well. That's become a habit for me, at least. :P
Hope I don't sound like a snob... I'm just trying to help.
~cornandbeans