Pretty center, Giv!
I'm hoping a bit of give and take is allowable. Mary, I would think slightly larger than 6" is ok. If it looks like the piece needs it, follow your instincts.
Speaking of give and take, I finished my center today and tho I tried to make it 18", it came out 20". Is that going to be ok with everyone, or should I start over? I altered the dresden, and altered it again, and still couldn't get it much smaller without chopping into the windows.
Love how it turned out. I've never done one of these dresden 'neighborhoods' before.
I have a little of the good thoughts fabric I used for the background and will send it along with the center, in case anyone wants to use it in later rounds.