This would never be posted with an intention to sell.
The only thing I might be inclined to do is provide the full render with the .psd as layers so that DMs with Photoshop interested in using it can gradually reveal features to their players - a technique I'm using quite successfully in my current 1st edition AD&D game.

I've been playing games since 1982 and am well aware of the old TSR inclinations to sue first and ask questions later - but it seems to me that WotC isn't really inclined to garner any bad press around the hobby currently as they try to reinvigorate the brand. I was mostly concerned with the community here viewing it as bad taste, but it does not sound like that is anything I should be worried about.