I'm so surprised that everyone voted for the same option... I wish I could see the things so clear! Many thanks, I really value your point of view

Well, I set everything on pinwheels, and this is the result:

[ATTACH=CONFIG]532965[/ATTACH]

I've always seen the pinwheels with white background, maybe it's the reason I wasn't sure about this layout. I like almost every block individually but, when I put them together, I am in doubt...

And now: Do you prefer the option 1 (pinwheels alternating with square in square) or the option 4 (only pinwheels)?

If I can't unsew, I think I will have to remove some blocks (the one in the middle of the bottom row, for example). Anyway, tomorrow I'll look at it with sunny light.