So this is Second Challenge. This challenge is "Rubik Vision"
Enjoy it, anyway.
The selout you're trying with the inner outlines isn't really working, it looks like a nearest neighbour resize gone wrong.
I like the what you've gone for but I think the outlines or shading on the four middle squares need to be bolder.
The selout you're trying with the inner outlines isn't really working, it looks like a nearest neighbour resize gone wrong.