If your stitch count is correct you are probably doing it right. But when purling after a yarn over you are making the YO bigger when you bring the yarn to the front and not so much when knitting after a YO because the yarn stays to the back. Also lace needs to block when done, it will likely look better when you are all the way done and it's not all scrunched up.
May Peace Prevail on Earth.
I'm newamy on