All I'm saying is you might get a better response with more clients if you post unique work.
Especially since logos are far more desired as being 'unique', doing the 'copy'/modification only serves to hurt yourself and your clients down the road.
I can see this as being somewhat acceptable for say a page layout, or general theme. But you have to be far more unique/discrete when it comes to logos as that's the pinnacle of one's identity.
And seeing as how one of the original examples was easily noted as a copy, you just shot your rep to hell.