I dont know what you have done with the quality of the picture but it looks a lot less good then the original, i mean the source ofcourse, your work looks fine the guys facial expression and his mouth and teeth look pretty well done, the tongue of the dog seem to have a dark outline, perhaps you can get rid of that and make it a little less bright so it matches the guy source better the expression is just great though holding off my vote incase you want to make changes

Doubling the size of the original image caused the distortion to the image quality but the effect was okay in my eyes (if you look at the original image you will see he was posing with a painted egg he was mimicking),

I fixed the black burn on the edge of the tongue (happens when I use a detail filter (hdr) and I didn't catch it. As to the brightness of the tongue, My friend had a black lab and when that tongue used to pop out of his head it looked like an alien from another planet so that was the effect I was looking to achieve.

Shrunk the entire image to tone down on the distortion and polished out the black line on the tongue from the filter. (I kind of liked it because it gave the tongue some rot, but I see it disturbs some people)

gl author its a fun and silly image

Better with the mouth shut! Very funny composition author, good luck!

I really like the grungy gritty feel of this image! Good luck!