here's just a quick look. i'll try to add more later.
your work with graphics generators shows competence and a good grasp of balance and color. your dx theme has a good layout, but is a bit 'flat.' overall, your work needs more visual depth - a sense of physicality and mass - but shows promise.
in general, generator programs like bryce tend to inhibit creativity more than unleash it. your best course of action would be to wrap yourself around a good photoshop or psp tutorial and dig in. somebody has probably already mentioned the pshop tutorials at wasted youth, but i'll mention them again.
i tend to like analogies, so here's one. using bryce, poser, tgen, et cetera, is much like watching a few dozen episodes of bob ross painting 'happy little trees.' it's a quick way to get some nifty effects, but all you'll end up with is motel room art. yes, it's possible to get really creative excellent results with either, but only with a generous application of time, effort, creativity and practiced skill. anything worthwhile takes time
