. Just say I don't like it! That's smart
I respect the fact that my artwork sucks for him, but don't get "humorous" with me as in: "also this is spam.
It's nice of him to explain why he doesn't like it. If you didn't get immediately butthurt like that, you could instead use this kind of information to improve as an artist.

Of course your post is spam, at least be pleasant and good natured about it instead of a dick and maybe people won't mind that it's spam since it is poker related.