Doesn't much look like a swamp, but it looks like a decent terrain with potential.
I'd advice you to add more land, as this looks more like a lake than a swamp,
and I'd advice you to thin out the reflection, a swampy lake is generally a little
too boggy for such nice reflections.
Those gaps between the trees also look horrible, you should cover them and add
add another layer or two of mountains both in front and behind them, to give the
terrain a little more depth. I also adivce you to, instead of using the editor default
terrain fog, to use the "Cloud" model from the UTM and flatten it completely, to give
the terrain a somewhat more natural grime and fogged appearance.
I would say more, but let's start there.