Hi Joan...I thought this picture was very appealing and gave it a high score...I personally really liked the backgound and didn't find it at all distracting...to me it was so apparent what the subject is, but that's just me...I don't need things overly simplified like many I suppose. This was one of my favorites.
The crane is nice. I like the idea, but the two-tone background is distracting, especially since you can see that the green (grey?) material is out of focus and is reflecting the light in an unhelpful manner. Try a solid, non-reflective background, with the vertical part of the background angled slightly.