When I first started quilting on my longarm and had a part-time business I had one customer give me a quilt that was one large star. The pucker was very evident once on the table. After researching on the internet and found a suggested answer, I added a small amount of batting in the center of the star. I also did a large, swirly pantograph which also helped to control star center. I thought it came out rather good. The customer had said this was her first quilt(it had other flaws also) and she didn't mind what I did to get it quilted. She was extremely pleased at how it came out.