This is a really interesting application of the Mexican Star pattern. I have made two of the wall hanging size (gave them both away) so I am familiar with the pattern. I like what you have done with your fabrics. I do think I would change the background to light blue or gray and would use a blender rather than a solid. That would make the tile fabrics pop out. I like the rest of your color choices. I think I would proceed carefully with another couple of blocks to see what happens.