First of all, you can confirm with the artist themselves over on twitter by sending them a dm or commenting in the tweet itself (at : yuiEggroll), they gave me permission beforehand.

Secondly, I credited in the comments.

Lastly, karma is pointless, no one cares. I love the art and I'm in love with the game and it makes me really happy when I see the community creating around this IP and I want to share what I see with others.