Thanks for the replies everyone.
The levels definitely helped with being tweaked and agree that the piece of foliage is a distraction, i'll have another go at those next week some time.
The crop is quite extreme I think, although it almost works as a sort of vertical panoramic
Perhaps when i've removed the foliage the urge to crop it so much will be negated, i'll give that a try and see.
Appreciate all the comments so far
TobyH