I get a color shift effect similar to this when I underexpose, and bring it back up in post processing.
I like the scene and the S curve. I knew that this was in Florida.
Welcome to DPC. Keep shooting and posting.
I like the S-curve and the overall comp on this. There's a little graininess in the sky, but that's tough to deal with under basic rules wihtout affecting the rest of the image. A lower perspective view would show off the detail of the gravel path, which might look neat.
I am not sure whether there is an unambigious definition of leading lines, but in my book, they should be a line or several lines that lead the viewer's eye towards the main subject of the picture. I think that's not the case in this picture. Your pic uses a vanishing point rather than leading lines.