I just finished my rings, in the second row I put 1 sc in each sc. When I put 2 sc the it ruffled. Was that the goal? You did the right thing... eveyone's work is a little different...my instructions are just a guide.
My NEXT dilemma was the forming circle, bunches and looks more like the Olympic circles than a round piece like yours. I would love to see that when you are done (pictures please). The ideas are endless.
I found another thing to you is for so I will post later in the week.