I’m relatively new to the community - so please take what I say with the appropriate amount of salt.
That said, this is really quite nice. I really like the cactus and how it stands out against the darker background. I am also attracted to that type of composition. The colors are really nice - both in highlight and shadow.
The only issue I find is a bit of confusion with the subject. That intersection of lines in the upper right third really draws my eye and holds on to it. While I really like that area of the image, I do think it draws away from the saguaro. Cropping it closer to square would resolve that - but I admit it would take out a nice part of the image.
I took a look at your portfolio. Your work is very nice!
Ohhh – I love that BG!! Maybe sometime do one just of it – if you can get a clear view. But as to what you actually did – very nice! I see a lot of possibilities here, probably involving you bushwhacking in the thorns though. Any chance to get closer to the Sauguaro and place it against that same BG only a little larger in the frame and a little to the left? (Probably not without a machete.) This might also be wonderful with the same pre-sunrise light you got on a Saguaro a couple of weeks ago.
Diane, this was taken at an arboretum where visitors must stay on the trails. I couldn’t get closer. It’s not hard to find that kind of background around here, though, in places where there aren’t such rules.
I want to withdraw my minor criticism regarding confusion on the subject. I was just flipping through one of Guy Tal’s books and ran into a similar composition (p 16, Another Day Not Wasted - Alien Tree).