No, I do not pin. I do sometimes give just a little more spray on the corners after testing to see how "sticky" they are. I never have a problem as long as I watch my sides to make sure they don't get folded under. I FMQ all over the quilts and very rarely have a tucking issue
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My newest Grandson, Caleb Austin, was born May 29th. I am now Grandma to 4 precious babies. I am so blessed!!!!