This shot has so much going for it. The contrast in silhouettes from bush to saguaro, the nice way the light comes through the branches. Very nice work. You may want to experiment with how much space is above the cactus. It seems just a tad crowded to me--or perhaps just a bit more negative space? Lovely shot! 9
I wonder if there is too much going on here. the silouette of the cactus should be more than enough to be the subject. The tangle of the tree on the right adds too much chaos. Including it also creates a space in the middle of the frame. My eye goes to the left, to the right and back and forth... but not in a pleasing pattern.
The cactus is just distracting to me. A tighter crop around the bush (?) makes for a much more dramatic image, in my opinion. Very nice effects with the lighing.
My opinion is that this would have been really cool if your perspective could have been changed to put the sun at the base of the cactus.....nice blue sky.