You did not resize them?
They lack in definition.
And yes, in the first the tree line is definitely too high. You wanted to show yourself, us all, everyone who sees your photo the beauty of the colourful sky and the largest part of the photo is black ... the balance is not quite right.
The pics also look quite noisy (grainy in film-world), which becomes quite obvious in the second.
Sorry, I am totally unfamiliar with camera brands and all that, so I haven't got a clue as to what kind of camera you used for these ... but I am so surprised to hear you did not downsize them ... ah, but then you loaded them into Photobucket ... so they did it for you...!