Umm... I'm not sure where to start. What were you going for when you took the shot?
It appears to be largely under-exposed, with the colors somewhat dull. You've also got a crooked horizon - not the end of the world, but worth fixing when you reshoot.
More than anything, you've got to alter the composition. You've got a largely empty frame that's cut in half by an overwhelming vertical line. There's no "flow" or "rhythm." I'm assuming you want the flag as the focal point, but with the direction of the wind it's largely obscured. The base is actually much more imposing on the eye...
I'd play with your angle and focal length. Adjust your exposure... And then experiment a lot. See what works. Take a shot and then step back and look at it. Where does your eye go? Where is the focus and where do you want it? What distracts from your intention?
***Note, I'm on an uncalibrated monitor. So, take some of it with a grain of salt.***