Nice pictures! It´s also good to see what that little Olympus can do. Have you used the standard kit lenses with those pictures? Lenses make a great difference. I´m using Canon Ixus and Sony alpha 350 both good devices but I must say as sumoj275 has allready said: It´s not the camera, it´s the man behind it.

The camera is good when it shows the wiewer the same thing the photographer saw when the picture was taken. The point of view is the thing that no mechanical device can do, so the photographer is good when he can take a picture of something that everybody can see in a way that in the picture it looks like never seen before.