It's kinda up to you what you like best. I'd adore a baby from any of them xD, but I'm a sucker for monochromatic designs.

Personally I think all of the designs are a bit too cluttered, but that's just my opinion. I like my designs simple in general.

Here's a few of my attempts:



How frustrating... I love how it looks on the male, but it so much muddier on the female!

Attempt at Ryori:



I think the petals look a lot like music notes personally....



Using the earlier suggestion, but if you make the eyes black and the coral white you get these nice thin lines.

As I'm working I think what throws me about some of your designs is that they're too dark. Music pages are about %70 white space. I modified your Lighira design a bit:









Aaaannnnndddd I just now read that you wanted them to have Lucky Runes.... Oops. Sorry... I'll just leave these here in case you change your mind.... *brushes designs gently under a rug*