Hi Karlo,
I have been wondering about this picture for some time and was not at all worried by the tree in the upper right corner that you removed. Instead, I was uncomfortable with the severe distortion of the foreground. What lens did you use and what settings? I tried correcting it with the Photoshop and found I had to distort the image in the lower 1/2 to Maybe you could simply correct this knowing your lens, or perhaps you like the effect?
Asher