Looking at the image, what is it that does not impress you?
It is sharp throughout the image so technically it is fine.
The composition is a little static taken full on centrally. Is it possible to get lower and off to the side a little to add some dynamism?
Something on the water would be good, but if you cannot manage that, a rock lobbed in to get a few ripples maybe. Lighting is a little flat as well but these are not camera operation issues...john