I really struggled with this challenge and had decided not to enter, then 2 hours before the challenge deadline I was in the backyard and saw these holes in the fence and decided to give a go. Recruited my daughter to go into the neighbors yard and peer through the fence.
Post-processing:
Convert from RAW
Curves
Saturation
Crop/Rotate
Selective desaturation of leave behind 2nd knot hole.
USM
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Nicely done. I'd like to see a smaller knothole just large enough for the eye, but I suppose you have to work with what you have. I think a closer crop would be better.
Fences are what fences are, but the knot in the slat right next to the peek hole takes a lot away from the image. Perhaps if you could have poked through a bit and placed on eye in each hole, it would have worked better.
Nice shot. If I was being picky I would just say maybe it needs a tighter crop. I don't think the trees add any value to your photo. They seem to be more distracting than anything else.