First, let me welcome you to DPC and congratulate you on entering your first challenge. This image was refreshingly different than most of the images in this challenge. Now the question is, did you get the most out of this image. I really don’t think so. First, I think a tighter crop on the couple would have moved the focal point of this image to the hands instead of the cropped off heads. Try cropping on both sides to just about the outside edge of their backpacks. I would also suggest converting this image to black and white, as the bright colored safety vest in the background really distracts from the hands as well. I highly recommend the Channel Mixer conversion method used in this DPC B&W conversion tutorial.
Please let me know if you have any questions regarding this critique.
I think a little bit stronger depth of field would have helped the couple pop out, either way i really like the composition and naturalness of the shot :)