I don't know why, but I don't really like the colours on this one. I'm talking about the back design here and the AoS. All colours are like a darken 'light' colour. It's difficult to explain. I really like the design of all cards, that's for sure. I would just try different darkness and contrast of the colours. For eg, I hate the green on the Medusa. I think purple or yellow (that background colour) could be nice for that one, or just another green colour. But I would definately change that. From now on, this more reminds me of a Tarot deck, absolutely not negative about Tarot deck, but It's just not my piece of cake. What if you tried to make some roses red. Really don't know what could come out of it. Could be awfull, but I think it would put some more life and contrast. So that would be my suggestion. Other colour shades: Try changing the contrast and the darkness of the colours. I'm absolutely no expert on the domain, but that's just how I feel it. Like I said before, I totally like the design on itself.