generally the pictures in the 'landscape' category are under-exposed, especially the last few with the dark clouds and the ALMOST-black foreground. Can hardly tell that they are trees. Some of the photos have tilted horizons.
buuut, nearly all your landscape shots are very under exposed, and your flora & fauna seems to be mostly snapshots, with the exposure problem, and occasionally focus issues as well. but i like the one of the leaves on the ground, if there was greater contrast/more shallow angle