Re: Is crappy my photo ?
Crap? No. Good? No. It's a nice scene and there is
lots to shoot here, but the composition here leaves me asking, "What is it you're trying to show me?" I love the deep color of the water and the waterfall, but I have to climb over all that foreground stuff to get there (none of which, btw, leads the eye anywhere). This is a snapshot of a place where photographs are taken. You needed to take a deep breath, slow down and find the photographs here, and then use the tools you have to execute them (with running water, a tripod and ND should have been at hand and used). From this spot there's a shot in and around here somewhere...
...but you'd be even better served to get in a position where you could cut out the foreground entirely, or use it to lead into what it is you want to show a little more effectively.
As for your question regarding blur on the sides, a lot of wide angles will distort and go soft at at the edge and I suspect that's a lot of it. Sometimes if you use profile correction in Lightroom/ACR any lack of quality in the optics will be further exaggerated. The 10-24mm zoom here is a decent lens, but you're shooting wide open and that will also tend to give you some softness and is likely the major culprit. Get to know your equipment and know where you need to set your aperture to get maximum sharpness.