I have found that using lots of pins and taking it slow on the curves keeps me from getting puckers. I also like to iron/press my sections when I sew them. They seem to fit together better when they are flattened by the ironing. Like I said before, if I can do this, so can you. Just take your time, don't get frustrated and have fun. I'm not in a race to get this done, I'm just playing with the pattern.
I haven't sewn today because our air conditioner decided today would be a good day to quit cooling! Repairman is coming next Wednesday. It is 87 degrees in my house right now at 12:48 a.m. Too hot to do anything. Sitting here reading the board in my undies with a fan blowing on me. haha I know..."too much information" as my brother in law always tells me.
