You've got some lovely shots there! I especially like the first one (all those Spanish moss draped trees!), the beach shot (the light is so warm...but I think the horizon dips a bit to the right, which you can correct), the lighthouse with the crashing waves (lovely light again, but maybe the composition, with the lighthouse in the centre, could be improved?), and the fishing boat at twilight, with the moon, is a lovely capture (bit grainy though).
By the way, in several shots (eg of the lighthouse and of the beach), you can see spots in the sky area that indicate you have dust on your camera's sensor.
And I checked out the website ... you've got some more nice Charleston pics there too!