As the saying goes..Opinions are like A**holes, everybody has one, but your is yours alone, I am a beginner and have to usually buy kits, my grand daughter then goes through my "kits" & other scraps and comes up with a beautiful quilt that all happen to be left overs from my kits. She doesn't know this & I'll never tell her. She is excellent at matching fabrics where as I am not. Your quilt will be just as wonderful as you planned it to be with or without your sisters opinions. I have cried right along with you with all of your wonderful comments here on this awesome Board, follow your heart and these advices you will do GREAT!
Jeri