Aren't you contradicting yourself by telling me to add Depth of Field but making it more realistic? This image is a photograph so it's as real as it gets lol. I did however blur the top part slightly on the third image and I did try blur more but it didn't look right.
what i meant was to change the depth of field like if you was changing the aperture on the camera. try using lightroom you might find a bit more realistic results.